Ending Communication Flow

[justinjdickow]

Need to find out the following:

We know that services need to be closed with the end service control frame with 4 bytes in the payload that is the hashID. Does this hash ID always come from the payload of a StartServiceACK or is there some other way of getting it for different versions of the protocol?

Can a head unit close the communication session or does it always originate from the phone with an EndService? (What is the behavior when a vehicle turns off while the app is still connected?)