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List:       apache-modgzip
Subject:    [Mod_gzip] Antwort: mod_gzip and EAPI (verbose) (Berthold)
From:       Michael.Schroepl () telekurs ! com
Date:       2002-04-19 20:44:46
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Hi Berthold,


> Is it true that SSL-encrypted replies are not compressed?
> In the logfile I can read:
> mod_gzip: CAP_FILE_EMPTY In:0 Out:0:0pct.

the problem is that SSL doesn't "play fair" and allow
for its output to be compressed before it will put the
SSL wrapper around it. mod_gzip knows that it should
be "interested" in compressing this request, but mod_ssl
doesn't provide any data where mod_gzip expects them.
It's just a problem of cooperation of the modules
during the request processing.

But what can be done is using two virtual hosts, one
with HTTP, the other with HTTPS, and then forward the
HTTPS requests via mod_proxy to the HTTP virtual host,
let this one serve the request, use mod_gzip there to
compress it and finally let the first virtual host put
the SSL wrapper around the response.
This has been described several times in the mailing
list archive, and provided with the additional search
term "proxypassreverse" you will get appropriate Google
hits for it.

Maybe you start with reading this one:
  http://lists.over.net/pipermail/mod_gzip/2002-February/002782.html

Greetings,

      Michael


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