How to use messenger ipc protocol over SPP Bluetooth connection within Android?

Question

How do you use Android Messengers (IPC) when communicating over Bluetooth?

Is there some kind of specification for Android IPC using Messengers over a SPP Bluetooth connection between two smartphones running the same App?

I am not so fond of reinventing the wheel myself and drawing conclusions afterwards about my own design mistakes :)

Answer 1

How do you use Android Messengers (IPC) when communicating over Bluetooth?

You don't.

Is there some kind of specification for Android IPC using Messengers over a SPP Bluetooth connection between two smartphones running the same App?

No, sorry. Messenger is specifically designed, along with the rest of the Binder framework, for communications within a device, not between devices.