I tried shutting down socket IO with the adapter installed. The node js process won't exit, since there are still timers active.

I expect this to work:

    socketIo.close();

There are still two timers running afterwards: the 30s cleanup timer and the ~2s reconnect timer

The workaround I found is:

    await socketIo.of('/').adapter.close(); // < this will clean the 30s cleanup timer
    socketIo.close();
    pool.connect = () => new Promise(() => {}); // < this will make the reconnect timer get blocked forever on the first reconnect attempt.