New HttpClient API - does it handle preemptive auth?

[Jaikiran Pai]

I'm testing/integrating the latest OpenJDK upstream HttpClient 
implementation with one of the libraries I have. Thanks for fixing some 
of the issues I (and others) had raised before!

Before the introduction of this new API, the HttpURLConnection (which 
acted as a basic minimal client for HTTP) had an internal implementation 
detail where it handled preemptive authentication for resources which 
required auth. Does this new HttpClient implementation support 
preemptive auth? I haven't seen it exposed as an API (haven't checked 
the latest merged javadocs). But is it something that's even handled 
internally currently? Any plans to expose it as an API?

-Jaikiran