Good news :)
We have finished basics for networking over TCP. It will allow us for actions such as logging in, buying or selling parts etc.
Battles will run on UDP, which is a little bit less reliable, but much faster, and we will implement it soon(TM).
As you can see on the video, we also do have fake client. It allows us to mess with network code without compiling the whole game every time and also change things without worrying about breaking something. The fake client is written in C++, so we can merge it into game client without any major problem when it's finished.