I’ve rewritten the chat server almost from scratch for the next release, because it was getting buggy for some reason and I couldn’t see why.
The new version handles concurrency correctly (the old one did not). And it’s code that’s easier to read, I think. And the connection goes through this plugin https://unrealengine.com/marketplace…-socket-plugin
With it, you can serialize anything you want in blueprints – very easily.
Hopefully you’ll have better luck with this new version. I’ll release it when new UE4 version comes out.