To protect against DNS spoof attacks, we now check that the questions
in incoming responses match the questions in the request we sent out.
Suggested by @zecke in #10.
- Break out request building into a DNSRequest class.
- Break out response parsing into a DNSResponse class.
A DNSRequest contains one or more DNSQuestion objects.
A DNSResponse contains all the DNSQuestions asked, and a DNSAnswer
object for each answer.
As suggested by Joshua, this commit adds the 2-clause BSD license as a
comment block to the top of every source file.
For the first pass, I've just added myself for simplicity. I encourage
everyone to add themselves as copyright holders of any file they've
added or modified in some significant way. If I've added myself in
error somewhere, feel free to replace it with the appropriate copyright
holder instead.
Going forward, all new source files should include a license header.
