tinfoil-knight / banyan

A toy DNS resolver

Banyan

A toy DNS resolver I made while learning Elixir.

Usage

Pre-requisites

• Elixir >= 1.14.5
• IEX

Steps

After cloning the repo, run in directory

iex -S mix

In IEX, to lookup the IP address for a domain, run

iex> Banyan.resolve("www.facebook.com")
querying 198.41.0.4 for www.facebook.com
querying 192.12.94.30 for www.facebook.com
querying 129.134.30.12 for www.facebook.com
querying 129.134.30.12 for star-mini.c10r.facebook.com
querying 185.89.219.11 for star-mini.c10r.facebook.com
"157.240.16.35"

Note: Only querying "A" records is supported currently.

Author

• Kunal Kundu - @tinfoil-knight

License

Distributed under the MIT License. See LICENSE for more information.

Acknowledgements

• Implement DNS in a Weekend by Julia Evans
• Building a DNS server in Rust by Emil Hernvall