rustnetwork-programmingrust-tokiotungstenite

Trait bound not satisfied for MaybeTlsStream<TcpStream> in tokio-tungstenite

I'm trying to build a struct that handles async websocket communication. I'm working on getting the connection set up and, as part of that, I'm using tokio_tungstenite::connect::connect_async(). I want to store its returned value as a field in the struct I'm working on.

I've tried the following:

use tokio_tungstenite::tungstenite::stream::MaybeTlsStream;
use tokio_tungstenite::WebSocketStream;

pub struct WrAsyncSocket {
    m_socket_stream: Option<WebSocketStream<MaybeTlsStream<TcpStream>>>,
}

With this, I've tried importing both:

tokio::net::tcp::stream::TcpStream

and

tokio::net::TcpStream

However, both result in the following error on any instance of TcpStream:

the trait bound `tokio::net::TcpStream: std::io::Read` is not satisfied
the trait `std::io::Read` is not implemented for `tokio::net::TcpStream`rustcClick for full compiler diagnostic
stream.rs(63, 28): required by a bound in `tokio_tungstenite::tungstenite::stream::MaybeTlsStream`

Any advice on what I should be doing here?

Solution

  • You likely want to import tokio_tungstenite::MaybeTlsStream instead. The one you are using is a re-export from the tungstenite crate (which is not async) while this is the async version of it.