Replace host based on file type

Rogerio,

If I understand correctly, you want to replace the host www.foobar.com with images.foobar.com.

For one file type you could do something simple like this:

when HTTP_REQUEST {
    if { [HTTP::path] ends_with ".jpg" } {
      HTTP::redirect "http://images.foobar.com[HTTP::uri]"
    }
   }

For multiple images types you should use a data group with matchclass for your images like this:

 
class images {
  ".bmp"
  ".gif"
  ".jpg"
  ".pdf"
  ".BMP"
  ".GIF"
  ".JPG"
  ".PDF"
 }
when HTTP_REQUEST {
    if { [matchclass [HTTP::path] ends_with $::images] } {
      HTTP::redirect "http://images.foobar.com[HTTP::uri]"
    }
   }

Hope this helps.

Chris