How to implement X-FACEBOOK-PLATFORM mechanism in C#

Currently I'm developing Facebook based desktop application.I want to integrate Facebook chat in my desktop application. I used Facebook Graph API in my application. So I want to use X-FACEBOOK-PLATFORM mechanism to connect Facebook chat server.Anyone 开发者_如何学Goknow how to integrate Facebook chat with X-FACEBOOK-PLATFORM mechanism in C#?

You need to use Extended Permissions- xmpp-login, Here is the link xmpp-login