dnsplug - a thin wrapper and caching layer for dns lookups

This project provides a simple high level api for performing DNS lookups. The actual DNS protocol implementation is provided by either py3dns/pydns or dnspython, depending on which of these is available. Additionally, responses are cached to improve the performance of multiple queries for the same value.

This code was originally written by Stuart D. Gathman as part of the pymilter project

Dependencies

Dnsplug depends on either pydns/py3dns or dnspython (attempted in that order). If running in python2, the typing module is also needed

Testing the module

in your virtualenv, run pip install tox and then invoke tox. This expects a python 2.7 and python 3.6 to be available.

Why is the module below src?

Short answer: to be able to correctly test with tox, long answer here

TODO

• As the copied code from pymilter notes, it is a bit inconsistent that AAAA records are returned as binary strings but A is returned as a dot separated octet ascii string. Let's figure out something better.
• Figure out a way to do testing that doesn't depend on internet connectivity. Let's mock the remote end.
• Testing of various failure modes.
• Set up automated testing somewhere (Travis CI?)