Question

I have a HttpHandler for resizing images, round corners, reflection etc etc. This i working OK. The problem i have is, that some data is stored in cookies, and the cookies are send to images, when they are shown. Is there any way to disable this globally (cookie-free requests) in web.config, or even in the HttpHandler itself?

Example page:
http://test.roob.dk/dk/product/ray-ban-rb3359-polarized-16/

Thanks in advance
CP // Denmark

Answer 1

The best way is to serve the images from another subdomain, for instance static.yourdomain.dk. This is because the browser will send the cookies with any request to the domain, that have issued them – so they will be included for any request to your images handler, when they really are not needed. Of course, you should also ensure that your image handler itself does not set any cookies.

Some even have sevaral static domains, like static0, 1, 2, 3. This is because many browsers by default will only issue one or two requests to the same domain at the same time, and wait for them to complete, before starting the next request. By having multiple domains, you allow the browser to retrieve more ressources in parallel. Here is an article about just that: http://yuiblog.com/blog/2007/04/11/performance-research-part-4/