Check for active BLE connection

Thank you both,

this works great it seems:

gatt.device.on('gattserverdisconnected', function(reason) {console.log("gattserverdisconnected, Grund: "+ reason+" Zeit: " + (getTime() -t) + " sec"); disconnect(reason);} ); 

with variable t being set earlier upon successful connect.

with reason 8 triggered when the BLE server (my sensor) goes out of reach (loss of reception) and reason (int) 19 gets triggered when the sensor shuts down due to inactivity.

Thanks again,

Joost