Custom Online Subsystem

Development Programming & Scripting C++
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Hey there,

I’ve got another question :slight_smile: My question is: How difficult would it be to implement my own custom Online Subsystem? For example, I have a separate login server (profile service) and a separate friends server (friends service). Now I would like to be able to use these servers from UE4 by using the Online Subsystem interfaces provided by Epic.

First, I guess, I would create new classes which derive from the basic interface classes (interfaces) and implement their methods.

But where should I do this? Should I write an engine plugin? Or should I implement it in my game project or even in a custom source build of the engine itself?

Last seems to be a bit odd, since I don’t want to share my online subsystem with the rest of the world :smiley: Also, I don’t want to do all the work again for each engine update.

And then another question: If I have implemented the interfaces correctly, how can I tell my game to actually use it as the default online subsystem? I know I can change these settings in the config files (and have to link the module/s), but will UE4 be able to find my custom online subsystem? Do I have to register it under a specific name somewhere in the engine?

Thanks in advance,
Dalon

2

Never mind… I used the Null System as base and it seems, adding the subsystem to my game project is enough and it registers itself using it’s name.

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Can you explain what you do? i want to make my own online subsystem and don’t know how to start?

1 Like
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The question is why would you want to create your own OnlineSubSystem?
What Dalon did was use the Null OnlineSubSystem which (as the name implies) uses a “default” subsystem built in to the engine itself.
This can be achieved by opening the DefaultEngine.ini file (located in the …/YourGameProjectFolder/Config folder) and setting :

[OnlineSubsystem]
DefaultPlatformService=Null