nginx proxy_pass weird url escaping ? (try it)

Question

The original URL is:

http://www.sitmo.com/gg/latex/latex2png.2.php?z=100&eq=%5Ccos%20%7Bx%7D%2B%5Csin%20%7Bx%7D%3DCV

For some sandbox flash security reason i need to create a proxy on my domain,

   location /latex_gen/ {
       proxy_pass    http://www.sitmo.com/gg/latex/latex2png.2.php?z=100&eq=;
   }

Which now points to http://www.edoboard.com/latex_gen/%5Ccos%20%7Bx%7D%2B%5Csin%20%7Bx%7D%3DCV

If you look at this two urls they generate images, but in the second case the "+" are missing. Is that because of some sort of escaping ?

Cheers,

Greg

Answer 1

Yeah the edoboard version is eating the character some how. There are a few ways it could happen.

But more importantly, rather than using somebody elses server (if you are) why don't you host the latex2png yourself?!