Antwort: [Mod_gzip] mod_ssl + mod_gzip (mod_gzip not compressing with mod_ssl)

[mod_gzip@lists.over.net]

Hi Peter,


> If I run just mod_gzip, everything is fine.  If I run just
> mod_ssl everything is fine as well.  But if I run mod_ssl
> and mod_gzip, then nothing gets compressed (but I do get
> the content on the webpage). I am not sure what the problem is.

your SSL module seems to internally 'rewrite' the HTTP re-
quests (so that other modules should not interfere with them).

Unfortunately, this tends to break your 'mod_item_include'
rules, and mod_gzip doesn't seem to accept the response
as to be compressed any more.
You would see that in the mod_gzip status code if you include
that to your log format.

> ClearModuleList
> AddModule mod_mmap_static.c

First you load all modules, then you clear the list again,
and then you add the modules? And do you actually need
all those modules? Think about removing 50% of these ...

> LogFormat "%h %l %u %t \"%r\" %>s %b mod_gzip: %{mod_gzip_result}n

Which values do you get for mod_gzip_result in your logs?

<IfModule mod_gzip.c>
    mod_gzip_item_include file \.htm$
    mod_gzip_item_include file \.jsp$
    mod_gzip_item_include file \.html$
    mod_gzip_item_include file \.doc$
    mod_gzip_item_include file \.js$
    mod_gzip_item_include file \.do$
    mod_gzip_item_include file "\.css$"
You include your request on a "file" base only -

> mod_gzip_item_include handler jakarta-servlet
> mod_gzip_item_include handler jakarta-servlet$
> mod_gzip_item_include handler ^^jakarta-servlet
> mod_gzip_item_include handler ^^jakarta-servlet$
> mod_gzip_item_include handler ^^jakarta-servlet$

Of these five lines, the first one is a superset of the
four others (and no. 4 and 5 seem even to be duplicates).
You don't need all five; you only need one of them.
(Do you understand the regular expressions you use here?)

> mod_gzip_item_include mime text/.*
> mod_gzip_item_include mime ^^image/.*$
> mod_gzip_item_include mime ^^application/.*$

Looks reasonable to be - unless mod_proxy would not set any
MIME type for its output. I remember to have experienced a
problem of this type some time ago - you might want to add
the "Content-type" HTTP response header to your mod_gzip log.

Regards, Michael