[Uptrenda]

I noticed that too and thought I was missing something. Some cool resources that are actually decent for network programming:

https://beej.us/guide/bgnet/ -- Covers what abstractions the OS provides for network programming and the guarantees that are possible.

https://www.madwizard.org/programming/tutorials/ - This is the very first ever good tutorial I read on socket programming. It's OG winsock. Introduces network programming from the most basic level. Aimed at C.

When you understand these guides you'll learn that how you structure your entire programs networking depends on whether you want to use blocking or non-blocking sockets. If you go with blocking you'll probably be using threads or processes. Otherwise you can't do any other work. With non-blocking it will be more about polling sockets and eventually you might end up with something resembling an event loop.

Until you come towards to the current approach to networking which is mostly async await -- an event loop works with non-blocking sockets, watches them for changes, and passes data from them to event handlers. There's a lot more that can be done on sockets to effect things like how data is flushed, how TCP errors are handled, and so on, but its a good start.