Authentication on custom Websocket Server

Hi,

I want to use a custom Websocket Server (using Bun) for my application. However I cant really figure out authentication on custom servers. Session cookies seem to be HTTP and secure only, which prevents me from reading them in localhost.

How would I implement the authentication here?

TypeScript

Bun.serve({
  port: parseInt(process.env.PORT as string),
  hostname: "localhost",
  development: true,
  async fetch(req, server) {

    // ... authenticate here

    if (server.upgrade(req)) {
      return undefined;
    }

    return new Response("Upgrade failed", { status: 500 });
  },
  websocket: {
    // ...
  },
});

TL;DR

To authenticate on a custom Websocket server, users need to connect and then send authentication information within 60 seconds. Follow a similar method as Discord's WebSocket handling or utilize Appwrite's Server-Side Rendering documentation. Use a custom endpoint corresponding to your backend endpoint. The Appwrite cookie should be sent to Appwrite and your backend for authentication.

the way discord handle websocket is that :

the user connects to the websocket
then sends a message with the auth infos (e.g. the discord token)
if the server receive the auth infos, it checks it and start the handle for the messages
if the user does not send the auth message in 60s, the server disconnect the user