Non-blocking extension to dnsjava

[<Ale...@no...>]

Hi - 

In case anybody is interested, we have published an extension to dnsjava 
that uses non-blocking sockets, and does not create a new thread for each 
new query. Where possible, it streams all DNS traffic over single port, 
rather than opening a new port for each query.

The code is an add-on to dnsjava - it does not change dnsjava at all; it 
simply provides a new NonblockingResolver which can be used instead of a 
SimpleResolver, and defines a new ResponseQueue for completed queries 
(rather than using the existing callback method).

Details, and the download link, are available here :

http://blog.nominet.org.uk/tech/Java/2006/08/08/Nonblocking-extensions-to-dnsjava.html

Please let me know if you have any questions or issues with this code.

Thanks!


Alex.