jresolver 0.1

jresolver is a Java DNS resolver library. This is a domain name resolver library written in pure java. It is what RFC1034 describes as a stub resolver, in other words it uses a single nameserver to do the hard work of resolving its queries. At the moment it only handles queries for MX records, but it can easily be extended to resolve new types of queries as needed.
Main features:
- Lightweight. The binary jar is less than 17k at the moment, and has no
- exernal dependencies besides JDK 1.4.
- Multi Threaded. It handles multiple concurrent threads sharing a single
- Resolver instance.
- Easy to use and develop. The software does one thing, and the code is quite
- readable.
- Free software. Released under the GPL 3.0 license, this software can be used,
- modified and redistributed by anyone respecting the terms of the license. If you
- need other licensing options, please contact me.
Usage:
A snippet of code says more than lots of words:
Resolver r = new Resolver("ns.voxbiblia.se");
List l = r.resolve(new MXQuery("voxbiblia.se"));
for (int i = 0; i < l.size(); i++) {
MXRecord mx = (MXRecord)l.get(i);
System.out.println("mx: " + mx.getExchange() + " p: "+ mx.getPreference());
}
If you want to build and test the software you need to unpack the files named jresolver-*-src.tar.bz2 and jresolver-*-test.tar.bz2 and use Apache Ant with the build.xml file included. You may need to update the test cases with your dns server names.
Enhancements:
- Somewhat tested, but not yet ready for a production environment.