squiddy / dns-in-a-weekend

DNS in a weekend

Following https://implement-dns.wizardzines.com/

Material I found useful

• https://datatracker.ietf.org/doc/html/rfc1035
• https://veykril.github.io/tlborm/introduction.html

TODO

This is of course very far from complete, but these are the things I want to look into in the future.

•  support ipv6
•  properly handle CNAMEs in resolve
•  split code into lib and binary
•  make this a DNS server

Testing

Server

Pretty straight forward when using dig. Because we do not support EDNS, dig needs to be instructed not to send a EDNS query with +noedns like this:

$ dig @127.0.0.1 +noedns google.com IN A