book VS dnsguide

Are you saying that this book is a hallucination? And this? And all of this?

4) C++: it’s often overly complicated for many projects. Use with caution, although it’s definitely useful in very large projects. But there’s a reason Rust is increasingly popular for embedded — here’s an engineer’s view.

If you come from the embedded C community then maybe something like Phil Oppermann's writing an OS in Rust series. There's also the embedded Rust book and the embedded Rust working group github that has a lot of resources.

I genuinely don't know why you would say that and I know you were talking about microcontrollers

The rust embedded book: https://docs.rust-embedded.org/book/

It’s not a job, but I’m guessing you would like this book: https://docs.rust-embedded.org/book/

There's a page on the Rust website on embedded systems. Given that you are already familiar with embedded programming, you can probably start with the embedded rust book.

Check out Building a DNS server in Rust

Building a DNS server in Rust - Emil Hernvall

I made one too https://github.com/ccouzens/dns-packet

The differences:

I followed this guide rather than the RFCs https://github.com/EmilHernvall/dnsguide/blob/master/chapter...

Mine isn't as polished. The command line parsing and output is more thrown together.

I hardcoded the packet identifier (it's not production code, and I'm only looking up one at a time).

I didn't use any bit manipulation libraries. I can see they would help because DNS packets don't line up their information with the byte boundaries.

I highly recommend the Building a DNS server in Rust guide by Emil Hernvall on GitHub. This guide will walk you through how to implement the DNS server and recursive resolve.

Rust: Building a DNS server in Rust