[rt-users] RT double-gzipping attachments

[Braam van Heerden]

Sven,

You were indeed correct.  The culprit was mod_deflate, though it was 
configured only in a different vhost.  Seems once it's loaded it affects 
everyone.

Thanks a lot for your help in this.

- Braam 

-----Original Message-----
From: Sven Sternberger [mailto:sven.sternberger at desy.de] 
Sent: 19 December 2008 15:10 PM
To: rt-users
Subject: Re: [rt-users] RT double-gzipping attachments

Hello Braam!

I can't reproduce the problem in 3.8.1. I would check the webserver 
configuration (mod_deflate?), or maybe a 'special' browser plugin.

regards!

sven

On Fr, 2008-12-19 at 09:47 +0200, Braam van Heerden wrote:
> I've got a weird problem with my RT installtion, occurring on both my
> 3.8.1 test install and 3.6.5 production installation.  
> 
> Normally if I attach a file to a ticket via the web interface as 
> Correspondence, then download the file from the server, I get the same 

> file back.  However, if I do this with a gzip'ed file, I get a 
> double-gzip'ed file back.
> 
> Example session:
> 
> ----------------------------
> 
> <>:~$ echo $( K=100;while [ "${K}" != "0" ]; do K=$(( ${K} - 1 )); 
> echo -n "DATA "; done; echo "" ) > file1.txt <>:~$ cksum file1.txt
> 2112801529 500 file1.txt
> <>:~$ gzip file1.txt
> <>:~$ cksum file1.txt.gz
> 3313752743 41 file1.txt.gz
> ------  Upload file to RT ticket, then download file again from RT 
> ticket <>:~$ cksum file1.txt.gz
> 3957064899 61 file1.txt.gz
> <>:~$ gunzip file1.txt.gz
> <>:~$ cksum file1.txt
> 3313752743 41 file1.txt
> <>:~$ file file1.txt
> file1.txt: gzip compressed data, was "file1.txt", from Unix, last
> modified: Thu Dec 18 16:09:43 2008
> <>:~$ mv file1.txt file1.txt.gz
> <>:~$ gunzip file1.txt.gz
> <>:~$ cksum file1.txt
> 2112801529 500 file1.txt
> 
> ----------------------------
> 
> I have looked in the RT source and can't find a place where gzip is 
> called, nor can I find something akin to this in my Apache 
> configuration.  Does anyone have an idea where I can look for a 
> solution to this?
> 
> RT: 3.6.5
> CentOS 5 i386
> Apache: httpd-2.2.3-11.el5_1.centos.3
> MySQL: mysql-5.0.45-7.el5
> Perl: perl-5.8.8-15.el5_2.1
> 
> Thanks in advance :)
> 
> Braam van Heerden