I don’t know offhand. I suspect the best thing to do would be to use the Objective-C bridge.

This is where I'll probably need your help. Once I have something socket-y going, like in nbb with node, I can do the rest of the plumbing

but I understand you're busy, no hurry from my side

I barely understand the Objective-C bridge myself, but happy to try to unblock you when I have time.

😄

I don't know if this could be of any help, but there are information and links on NWFramework and CFNetwork, which appear to be the options in ObjC https://rderik.com/blog/building-a-server-client-aplication-using-apple-s-network-framework/

Thanks, I added that link to the issue