[Dovecot] compressed IMAP traffic

[Timo Sirainen]

On Mon, 2009-09-28 at 16:01 +0100, Ed W wrote:
> > If your OpenSSL supports it, Dovecot supports it. I recently tested 
> > this with gnutls-cli program, openssl s_client for some reason didn't 
> > support it. I've no idea if any actual IMAP clients support it.
> >
> 
> I think this kind of feature is potentially more interesting than people 
> give it credit.  Timo, would it be possible to get some additional 
> debugging on the SSL connection creation so that we can see if 
> compression was enabled?

http://hg.dovecot.org/dovecot-1.2/rev/26ca4ff5d269

login_log_format_elements = user=<%u> method=%m rip=%r lip=%l %c %k

gnutls-cli --priority NORMAL:+COMP-DEFLATE --insecure -p 993 localhost
..
- Compression: DEFLATE
..
Sep 28 11:11:23 imap-login: Info: Disconnected (no auth attempts):
rip=127.0.0.1, lip=127.0.0.1, TLS: Disconnected, TLSv1 with cipher
DHE-RSA-AES128-SHA (128/128 bits) zlib compression

I just tested Thunderbird 2, it didn't enable compression.
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