Philip Guenther <guenther plus ietfd at sendmail dot com> wrote:
That's a clearer version of what I meant, yes. I certainly didn't mean
"must _only_ support specific version X.Y".
It would probably be wise to have some canned words for this be provided
by true TLS experts to avoid subtle failure modes. IIRC, a client that
supports, say, TLS 1.2 and 1.0 but not 1.1 will not interoperate with a
server that supports TLS 1.1 and 1.0. The client presumably violates some
requirement, perhaps one for common sense, but I don't see it in a quick
scan of the RFCs.
("MUST request a version no smaller than X.Y and MUST support all versions
between and including that version and X.Y"?)
I remember MS-DOS software that would run under DOS version 3.3 or 5.0, but
not 4.0.
--
Doug Ewell * Fullerton, California, USA * RFC 4645 * UTN #14
http://users.adelphia.net/~dewell/
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