Hi Christian, On Wed, Aug 10, 2022 at 3:09 AM Christian Eggers <ceggers@xxxxxxx> wrote: > > Many Bluetooth devices seem to have some kind of "reconnect behavior". For instance > an audio speaker reconnects automatically to a phone as soon as they are within an > appropriate distance. > > On the web, there are also many instructions how to troubleshoot problems related to > "automatic reconnect" ([1], [2], [3]). > > How is this feature actually implemented? What do I have to consider if I want to > automatically reconnect my product with the customers phone? > > In my concrete case, I create a BNEP connection from my product to the customers phone > (which acts as a NAP, Bluetooth Tethering has to be enabled on the phone). I would like > to automatically reestablish the network connection as soon as the phone is within an > appropriate range. Auto connection is controllable via main.conf: https://git.kernel.org/pub/scm/bluetooth/bluez.git/tree/src/main.conf#n263 That said that is not enabled for BNEP profiles by default, it is kind weird thing actually given that phones in general don't have Bluetooth tethering enabled all the time, in fact I believe the normal behavior is to disable tethering when disconnected, so even if you managed to reconnect it may not be tethering. > regards > Christian > > > [1] https://techwiser.com/fix-bluetooth-device-doesnt-auto-connect-in-linux/ > [2] https://unix.stackexchange.com/questions/334386/how-to-set-up-automatic-connection-of-bluetooth-headset > [3] https://stackoverflow.com/questions/32288670/bluez-auto-reconnect-devices > > > -- Luiz Augusto von Dentz
