Racket DNS resolver and server
This is a Racket implementation of a DNS
server and iterative resolver. It's written to work with
Syndicate, but could readily
be adapted to work with other I/O substrates. (It originally used
sync and events directly.)
The code is not quite fully separated into a reusable library (or even a configurable service) yet. Changing this is straightforward, but low-priority right now. Patches welcome!
How to compile and run the code
You will need the latest version of Racket. Any version newer than or equal to Racket 6.0 should work. Racket releases can be downloaded here.
Once you have Racket installed,
raco pkg install syndicate bitsyntax
to install Syndicate and bitsyntax, and then
raco make driver.rkt proxy.rkt
to compile the DNS code. Once it has compiled successfully,
DNSPORT=5444 racket driver.rkt
will start a DNS leaf zone server on port 5444 holding records from
test-rrs variable, and
DNSPORT=5444 racket proxy.rkt
will start an iterative DNS resolver service on port 5444 offering regular DNS service to all comers.
You can try out the service with
dig @localhost -p 5444 localhost.example
To enable debug output, set the
MATRIX_LOG environment variable to
MATRIX_LOG=info DNSPORT=5444 racket driver.rkt MATRIX_LOG=info DNSPORT=5444 racket proxy.rkt
Copyright and License
Copyright 2010, 2011, 2012, 2013 Tony Garnock-Jones email@example.com
This file is part of marketplace-dns.
marketplace-dns is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
marketplace-dns is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with marketplace-dns. If not, see http://www.gnu.org/licenses/.