iPad and hex encoded URLs

Do you have a question? Post it now! No Registration Necessary.  Now with pictures!

A long time ago I put Php based hotlink protection on some of the images
on my site.  It uses sessions and I found the need to use TRANS_SID
(session_id is added by the server as a GET parameter on img fetch).

(Yeah, ugly, but it has worked quite well.)

I excluded Google from this in htaccess, but I think the way image
search display works now, it has "occasion" fetch them with
?PHPSESSID...   That still works but ...

Lately, I have started getting 404 errors for requests like this:

They trickle in now and then - usually in bunches for a day or two every
couple of weeks ad I have noticed the commonality in the requests.  They
are all from iPads, e.g.,

Mozilla/5.0 (iPad; CPU OS 5_1_1 like Mac OS X) AppleWebKit/534.46
(KHTML, like Gecko) Version/5.1

I'm removing my anti-hotlink mechanism bit by bit, and it is of no great
concern to me.  But I wonder if anyone knows or can guess why it's
always an iPad that chokes on these hex encoded URLs.

 Chuck Anderson • Boulder, CO
 Turn Off, Tune Out, Drop In

Site Timeline