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I just went through this recently, and it vastly predates io_uring functionality, I don't remember even mentioning it.

It's a good place to learn socket programming using the POSIX sockets API, but that's it.

The GP asked for resources to understand low level network programming.

...relevant to io_uring. I was just clarifying that Beej's guide is not really that.

As someone who has written a fair amount of networking code in C, I'd assert that without an understanding of what's in Beej's guide, it will be nearly impossible to competently use io_uring in a networking context.

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