Unable to establish WebSocket connection with separated code about elysia HOT 2 OPEN

I ran into this issue too, I think currently websocket connections only work with one segment at the root of your application. This probably needs to go into a feature request (and should really be documented on the website).

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I've been encountering this issue as well, and came to report it after testing. It seems like WebSocket connections don't work as intended when behind a .group that comes off another instance of Elysia than the root instance.

Testing this URI: ws://localhost:3000/group/ws

Works:

const websocketApp = new Elysia().ws("/ws", {});
const app = new Elysia().group("/group", app => app.use(websocketApp)).listen(3000);

Doesn't work:

const websocketApp = new Elysia().group("/group", (app) => app.ws("/ws", {}));
const app = new Elysia().use(websocketApp).listen(3000);

Notice how the .group is simply moved to the other instance.

The server ends up responding with a 400 Bad Request.

Bun: 1.1.0
Elysia: 1.0.13

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