Question

as I understood from ASP.net MVC 4 Release notes, is that it has Content Negotiation, and that it will return the content type requested by the client

how is the client asking for a specific content ?

(in my case would be flash asking for XML, using AMF)

Answer 1

Like vansimke said, you just set the content type you need.

In the ActionScript client, it should be as easy as:

request.setHeader("Accept", "application/xml"); 

The server then respons with the header “Content-Type”.

response.setHeader("Content-Type", "application/xml"); 

Hope that helps!

Edit: headers wrong.