Run Headless build in Ubuntu Server

I built a headless build of my game and uploaded to dedicated server running Ubuntu Server 16.04. I am trying to run the game on server to host MP games.

However when I run the game, I get the following:


I don't know if it's listening for connections or what it is doing. I also don't know where the log files are. When I try to connect through another pc, it fails. I'm not even sure how to tell it which ports to listen to. I have a Network Controller object with Network Port set to 7777, but I'm not sure if that's all I need to do.

Any help please?

 

If you upoaded it to a host provider then you may need to get which port to use from them. Sadly im still learning myself so thats all i got

 

Thanks! Since I posted I found out:

1) netstat -atun will tell me which ports are being listened to.
2) adding -logfile log.txt keeps a log file.

netstat shows me that the game isn't listening to any ports, so I must have done something wrong in the code... I'm going back and checking, but I haven't been able to find any tutorials online that clearly show how to do this. I'll keep this updated as I find out more so hopefully through my torture I can at least help someone.

 

Ok I figured it out, and I used this free asset to do so: https://www.assetstore.unity3d.com/en/#!/content/61069

Once I carefully analyzed that, it all started making sense. Also, I start the game on the server using this command:

./server.x86_64 -batchmode -nographics -logfile log.txt

Then to save myself from building two different versions, I check for headless mode using code here: https://noobtuts.com/unity/detect-headless-mode (Alternatively I could have used #define)

Hopefully this helps someone!