Says whether a caller is at a limit right now, without counting anything.
For a door whose successes are many: it asks this first, counts only a failure with attempt(), and clears on success with succeeded().
the door being limited
the express request, for the address
Optional
optional; the identity attempted
optional; the ceiling, as for attempt()
the refusal, or null when not blocked
Says whether a caller is at a limit right now, without counting anything.
For a door whose successes are many: it asks this first, counts only a failure with attempt(), and clears on success with succeeded().