Introducing "Implement DNS in a Weekend"

330 · Julia Evans · May 12, 2023, 1:30 p.m.
Hello! I’m excited to announce a project I’ve been working on for a long time: a free guide to implementing your own DNS resolver in a weekend. The whole thing is about 200 lines of Python, including implementing all of the binary DNS parsing from scratch. Here’s the link: >> Implement DNS in a Weekend << This project is a fun way to learn: How to parse a binary network protocol like DNS How DNS works behind the scenes (what’s actually happening when you make a DNS query?) The testers have r...