Yes, it's possible to do this using the HTTP server that hololens runs. It's pretty sweet it streams performance data as well as the muxed camera+virtual stream. We got some really good results today recording a demo that way.

Microsoft did an awesome job with providing built-in tools and the vast majority of MIT open source hololens examples.

It's very technical and dev heavy, it would be great to see an app that will provide the streaming feature without the admin pairing currently necessary for the "server" access.