True if the request is in a state where it can be accepted (ie, that we're in phases VerificationPhase.Unsent or VerificationPhase.Requested, and that we're not in the process of sending a ready or cancel).
ready
cancel
True if the request is in a state where it can be accepted (ie, that we're in phases VerificationPhase.Unsent or VerificationPhase.Requested, and that we're not in the process of sending a
readyorcancel).