Julien ÉLIE <jul...@trigofacile.com> writes:

> Unless you are speaking of an update of the NNTP protocol to add a new
> compression capability (for instance with the use of a new COMPRESS
> command with possible arguments), that could be used by clients?
> Well, it will require some work to specify it.  Not to speak of its
> implementation afterwards.
> 
> I bet other protocols would also need similar new specifications to
> explain how compression can be enabled.

I think that's the idea.  TLS compression only works for NNTP because no
confidentiality is required.  In other protocols, there's at least
something (if not everything) where confidentality is desirable and so
compression needs to be specified very carefully if at all.

Even in NNTP, you don't want compression if you're using
AUTHINFO---and how do you know AUTHINFO will or won't be used at the
time of STARTTLS?

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