Creating a network client on the Windows Version of Galileo is what I would call trivial!
There is however a catch, in the initial SDK that was released the only port you can use is hardcoded at 27015. If you look towards the top of the GitHub file you’ll see the DEFAULT_PORT. Maybe I missed it but I couldn’t see anywhere to override this. Once you understand that, reading and writing from sockets is as simple as this:
Simply create this program, then on your PC open up telnet and connect to port 27015.
Hopefully in a future version of IoT you’ll be able to use different ports.