Bluetooth: prohibiting or detecting unwanted pairing request alert on connect

Question

Created Mar ’24

Replies 2

Boosts 0

Participants 1

When calling CBCentralManager's connectPeripheral:options: with some Bluetooth devices I'm getting the "Bluetooth Pairing Request" alert on iOS and a similar "Connection Request from:" alert on macOS. Is there a way to determine upfront if the alert is going to be presented or not? Alternatively is there a way to prohibit presenting this alert (in which case the connect request could fail, which is totally fine)? I tried specifying these options:

var manager: CBCentralManager
...
manager.connect(
    peripheral,
    options: [
        CBConnectPeripheralOptionNotifyOnConnectionKey: false,
        CBConnectPeripheralOptionNotifyOnDisconnectionKey: false,
        CBConnectPeripheralOptionNotifyOnNotificationKey: false
    ]
)

but those didn't help (and by the doc they shouldn't help as they relate to the use case of app running in background, which is not applicable in my case – my app runs and calls connect when it is in foreground, the unwanted alert is displayed immediately).

Boost

Answer 1

yetanotherme OP

Mar ’24

It's probably related to the "Just Works" pairing method that DOESN'T happen in those cases I am seeing the alert.

Got some heavy-wight workaround idea sketch: split the app into two with the second one being background only process. Specify CBConnectPeripheralOptionNotifyOnConnectionKey / CBConnectPeripheralOptionNotifyOnDisconnectionKey, CBConnectPeripheralOptionNotifyOnNotificationKey keys being false and make the "connect" call from there. Then somehow (XPC?) communicate data back to the main app.

There must be an easier way!

0

Answer 2

yetanotherme OP

Mar ’24

Anyone knows?

0