I want to make masterserver for unet but without unity

Hello what I want to make is you can it read in the topic.

I tried to load dlls like UnityEngine.Network.dll to my visual studio project but it didn't work. I cannot even make just NetworkServer.Listen without getting initializing error.

So is there something where I can comminuicate Unity Unet client with my soon made console version masterserver?
Already did a Masterserver (modifieded version of the release version here in the forum) with unet but my Linux cries because of high CPU Usage...

I want to make masterserver for unet but without unity