> Using the term "fail" in that context is not something made up by me or by the people who created the ssl application with that very "fail_if_no_peer_cert" option, it's the technical terminology that has been introduced in the respective RFCs, and which is actually used by the people who are talking about that stuff.

That's the key phrase! +1 for `fail_if_no_peer_cert`. I have no more questions about and you made this name explained for others who will be turned on by the same questions like I did. Thank you! (: