Which release this page or host should run, unauthenticated

The release's one question (ruling 6.34): key is the host table the caller speaks (unkeyed for every page a three-process host loads), version its own release where it has one. current is the release that key runs now, or null when it has none; state is current, available (offer Restart) or required (superseded 7 days, withdrawn, or older than an urgent release); expired says the caller's release is past 14 days and its page is no longer served. Open and never refused by the version floor. 503 while the release index cannot be read.