I’m using the SvelteKit IO library for sockets in my SvelteKit application.

My main application, when built, runs on port 4173. My socket runs on 3001.

Here’s the SKIO setup code: I can’t change 3001 to 4173 without encountering an error.

skio.setup('http://localhost:3001', {
    cors: {
        origin: "http://localhost:4173",
        credentials: true,
    },
}).then(io => {
    if (browser)
        return;
    io.on('connect', socket => {
        socket.on('message', (message) => {
            if (message.game_stop === true) {
                socket.disconnect()
            } else {
                socket.emit('message', message);
                socket.broadcast.emit('message', message);
            }
        });
    });
});

How do I deploy such an app with two ports?