How do I trigger an NSURLAuthenticationChallenge with NSURLAuthenticationMethodHTMLForm

Question

I can't find any documentation on NSURLAuthenticationMethodHTMLForm. How do I trigger an NSURLAuthenticationChallenge with an NSURLAuthenticationMethodHTMLForm authenticationMethod?

More specifically, is there any way to induce the URL Loading system to produce a challenge like that based on a response from an HTTP server? Or is NSURLAuthenticationMethodHTMLForm only for synthetic authentication challenges?

Answer 1

I can't divulge the source, but I asked someone that would know, and they said:

This challenge is never generated by Foundation. It is used for credential persistence