I am unfortunately saddled with a software package called Social Engine. Don't ever, ever buy it. It is extremely buggy and the tech support is beyond awful.

Anyway, I asked (paid even) them to do an upgrade and three days later (three days!) they finally did so. When I logged into the site I noticed that the styles were all missing. I opened a support ticket and all they told me was that it was a 416 error and to contact my ISP.

Since I am the ISP, I started doing my research only to find it's a rare error and I couldn't see any suggestions for turning range requesting off on my Ubuntu 10.10 Linode server (running latest Apache and PHP5 with APC extension installed).

this error was found by testing the direct link to the CSS files which are located in a themes folder in the buggy software.


Is this indeed a server fix I can leverage somehow, or is it something their software may be doing that I would need to look into more?


It's something about the way the request is being passed through the php; it's likely throwing an error or something, instead of serving up the right data.

Direct to the file seems to work: http://ministersdev3.themonastery.org/application/themes/monastery-theme/theme.css

But.. why would a css file need a partial transfer, anyway? Something else isn't working right, and I suspect the 416 is just masking the real issue.

A workaround to get the client to stop sending Range headers (I still can't imagine why it'd be doing that..) would be to block the header in Apache: Header unset Accept-Ranges. But, I think you'll find more issues after you get past this one.

  • Hmmm...that sounds complicated. But like I said, the software is very buggy. I will use this suggestion as my next point of research. thanks. – Lynn May 5 '11 at 0:42
  • Yeah - try the Header unset Accept-Ranges and go from there. If the application does any decent logging (which is doubtful), that would be good to check too. – Shane Madden May 5 '11 at 0:47
  • Hahaha...it IS doubtful. Sad. – Lynn May 5 '11 at 0:47
  • So which file should I be editing to unset headers? root@li255-242:/etc# grep -R 'header' apache2 | more apache2/mods-available/reqtimeout.conf:# Wait max 10 seconds for the first byte of the request line+headers apache2/mods-available/reqtimeout.conf:RequestReadTimeout header=10-20,minrate=500 apache2/mods-available/proxy.conf:# Enable/disable the handling of HTTP/1.1 "Via:" headers. apache2/mods-available/proxy.conf:# ("Full" adds the server version; "Block" removes all outgoing Via: headers) – Lynn May 5 '11 at 1:04
  • apache2/mods-available/headers.load:LoadModule headers_module /usr/lib/apache2/modules/mod_headers.so apache2/mods-available/mime.conf:# For files that include their own HTTP headers: apache2/mods-enabled/reqtimeout.conf:# Wait max 10 seconds for the first byte of the request line+headers apache2/mods-enabled/reqtimeout.conf:RequestReadTimeout header=10-20,minrate=500 apache2/mods-enabled/mime.conf:# For files that include their own HTTP headers: – Lynn May 5 '11 at 1:04

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