This was a little tool i wrote for use with the crowdgaming plugin however it might be useful to someone else.
If you need to get the local IP address of your computer running C2 for whatever reason in code
This little tool in adds your local IP address to a txt file and stores it in the same location as where you ran it from.
1) Copy the GetIP.exe file i've included and put it in the same folder as your exported NW.JS project .exe file (https://dl.dropboxusercontent.com/u/403350/LocalIP/GetIP.exe)
Then checkout the capx i've included to see how to execute and read the IP into your project.
Edit: Also, if you are Testing using NW.JS for previewing, put the GetIP.exe also in your C:\Program Files\NWjsForC2\win32 folder