TCP / IP Raw Sockets Program on Universal Windows Platform (UWP)

I want to write a TCP / IP Raw Sockets program on the Universal Windows Platform (UWP).

When dealing with TCP / IP raw sockets, it seems possible to use Windows Socket 2, but is it possible to handle from UWP apps?
UWP also has a Windows.Networking.Sockets namespace. There are services such as httpclient and websocket in these classes. Can these classes handle TCP / IP raw sockets?

Thank you.