Acidus wrote:
&ltp;SNIP>
I don't now what the web server needs to response to. But here is a summary of what I do know:

-XDR does not send cookies. Perhaps once the website has "agreed" with IE8 to return content to JavaScript then XDR will send cookies, but I don't know.
-XDR includes the HTTP header XDomainRequest: 1 on its HTTP requests
-XDR, like XHR, transparently follows redirects. HTTP request to the redirected resource still include the XDomainRequest: 1 header

An XDR has the following properties/functions:
-onerror
-timeout
-ontimeout
-onprogress
-responseText
-onload

Here's a Microsoft document detailing the new features (short answer: use a response header of XDomainRequestAllowed set to 1).

RE: IE8 XDomainRequest