Different behaviour when using WebSockets with TLS

[EricHier]

Version The output of cargo-tree tree | grep wrap: └── warp v0.3.2

Platform Darwin maries-mac 21.4.0 Darwin Kernel Version 21.4.0: Mon Feb 21 20:34:37 PST 2022; root:xnu-8020.101.4~2/RELEASE_X86_64 x86_64

Description We wrote a application having two routes, one WS route and one POST route. The routes work perfectly when TLS is disabled. When we enable TLS, a connection to the WS seemingly breaks the framework as no further connection of any kind is possible. To debug the bug, we implemented the warp::log::custom method to log all requests. No requests are logged after connecting with a WS to the application. We used Postman and the Python requests and websocket-client modules for our tests.

We tried this code:

[...]

#[tokio::main]
async fn main() {

    println!("Configuring websocket route");
    let ws_route = warp::path("ws")
        .and(warp::ws())
        .map(|ws: warp::ws::Ws| {
            ws.on_upgrade(move |socket| ws::client_connection(socket))
        });

    let change_state = warp::post()
        .and(warp::path("current"))
        .and(warp::body::bytes())
        .and_then(handlers::post_current);

    let incoming_log = warp::log::custom(|info| {
        eprintln!(
            "{} {} {} {:?}",
            info.method(),
            info.path(),
            info.status(),
            info.elapsed(),
        );
    });

    let routes = change_state.or(ws_route).with(warp::cors().allow_any_origin()).with(incoming_log);

    println!("Starting server");
    warp::serve(routes)
        .tls()
        .cert_path("./cert.crt")
        .key_path("./cert.key")
        .run(([0, 0, 0, 0], 8000)).await;
}

The full source code (besides the TLS keys of course) is available here.

[seanmonstar]

That seems odd. Could it be related to something happening inside ws::client_connection? Does the same problem happen if you use the websockets_chat example?

[EricHier]

We just tested your WS chat example and that does not work with TLS either. The webpage loads but it is not able to connect to the websocket.

[EricHier]

We only altered this line:

warp::serve(routes).tls().key_path("./cert.key").cert_path("./cert.crt").run(([127, 0, 0, 1], 3030)).await;

[nyvs]

I am having the same problem here. Using the websocket_chat app works fine, but tls doesn't work at all for me. Websocat prints something like this: websocat: WebSocket SSL error: error:1409441A:SSL routines:ssl3_read_bytes:tlsv1 alert decode error:ssl/record/rec_layer_s3.c:1543:SSL alert number 50

From microsoft.com:

50	decode_error	A message could not be decoded because some field was out of the specified range or the length of the message was incorrect. This message is always fatal.

Also I need to say that I love the warp project, I am very thankful for it.

[hongshengjie]

I am having the same problem here.

[GachiLord]

Hello, is the issue still relevant on the latest version? I have same behaviour when I use port forwarding in vscode. But I am not sure it's warp's problem.