The CloudKit Web Services Reference section on Authenticating Users describes the steps to receive a ckSession string to use when talking to CloudKit on behalf of a user.
Does a ckSession value ever expire? If so, under what circumstances?
ckSession lifetime
I am curious about it too, but no clue yet.
And a wild guess, is there any chance, I can "pull" the ckSession or something alike within my native iOS app of the same container, and use it somewhere else, like on a server?