badrr

A bad recursive DNS resolver

Usage

$ ./badrr example.com

Version

v0.5

Why?

Why not?

I wanted to learn more about how the low-level details of DNS work, so here is my journey.

Todo

• Process errors (correctly).
• Don't crash when a response contains garbage.
• Check all parameters of the response for consistency.
• Cache things (properly).
• Enable EDNS support for UDP responses longer than 512 bytes.