Cross-domain iframe to insert cookie

I need to track visitors to websites I own using the same script.

I own both example.com and site.com

I want to insert site.com/track.aspxin example.com using an iframe.

track.aspx will insert a flash-cookie into the visitor machine and also save some dat开发者_JS百科a into a db.

How to do it? Can I achieve the same result without using iframes?

This is a re-redirect mechanism.

track.aspx will write a cookie for the site.com domain, but you want a cookie which can be read in the example.com domain (I assume)

Create a page in example.com which writes cookies and redirects to site.com Create a page in site.com which redirects to example.com

Have site.com/FirstPage.aspx redirect to example.com/writecookie.aspx?val=abc Have example.com/writecookie.aspx write the cookie and redirect to site.com/track.aspx

Stick site.com/firstpage.aspx into your Iframe, and let it do it's re-redirecting.