Reviving this discussion, if I write up a draft for this what's going to
happen to it?  Will it get published, or shouted down?  The reason I'm asking
is that I've just spent the past three days debugging a TLS issue that's
pretty much a poster child for why extended alerts are needed, it was
something that would have been resolved in a single handshake exchange with
extended alerts, but took three days to sort out without them.  The sequence
was as follows:

  Client sends standard client hello.
  Server responds with handshake failed alert.

The same client has been running for years, and connects fine to any number of
servers, and openssl and some web browsers connect fine to the server.  The
only message exchanged was the hello, so there's zero security issues in
providing extended alerts.

Since some people have argued that extended alerts aren't necessary or useful,
I'll wait awhile for them to diagnose what was wrong using the information
above, which was all that was available.

Peter.

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