DNS Resolver (ECSE 416)

Overview

This is a simple DNS Resolver packaged in a self contained library. Query types currently supported are: A | NS | MX thus far.

Dependencies

This tool uses Python 3, tested on Python 3.7.4.

To install the dependencies and run the package you can use:

pip install .

Usage:

For usage instructions use:

python main.py -h

To use as a library:

import dns

query = dns.Query(names=[("gmail.com", dns.QUERY_TYPE_MX)])
with dns.Resolver() as resolver:
  response = resolver.query(query, "8.8.8.8", port=53)
  print(response)

Errors

The program will raise various errors based on the server response, more infomration can be found using help(Resolver.query)