Detecting bluetooth device disconnects/crashes

Hi!
I couldn't find a way to detect if a connection has crashed or disconnected so I tried to implement my own.
In lib/connection.js, I noticed that - if I printed the chunks of the read method - they stop printing as soon as I turn off my bluetooth device; after ~20seconds of apparent frozen behavior, this method continued working, printing chunks of zero length buffers.
Thus, I added the following line
if(chunk.length == 0){ self.emit('error')}
in

(function read(){
      self.isOpen() && self.port.read((err, chunk) => {
        process.nextTick(read);
        if(err) return self.emit('error', err);
        self.emit('data', chunk);
        if(chunk.length == 0){ self.emit('error')}
      });
    })();

This allows me to fetch error events like so:

    connect(address, 1, (err, linkage) => {
      if (err) {
        console.log('connection attempt error');
      } else {
        linkage.on('error', (err) => {
          console.log('disconnected!);
        });
      }
    )}

However my approach assumes I won't be receiving zero length buffers when connected which I realize that might not always be true (or not for all devices);
Also, any thoughts on how to detect the disconnect before the ~20seconds pass?
Thanks!

Commencez par lib/connection.js et examinez le callback de lecture, notamment la façon dont les buffers de longueur nulle et les erreurs de lecture sont émis. Reproduisez le comportement d’arrêt de Bluetooth décrit dans l’issue et déterminez l’événement de déconnexion attendu ainsi que son moment. C’est terminé lorsque le comportement de déconnexion est défini et couvert sans supposer que des buffers de longueur nulle sont impossibles pendant une connexion valide.