RE: Thread Safe

> I've been testing out concurrency with dnsjava.   I've noticed errors when
a
> bunch of threads try to use the same SimpleResolver for the first time.
> 
> 
> 
> If I send 1 request, wait for a response,  and then start all the threads,
> everything is fine.

There's a bug in 3.0.x which is fixed in 3.1.0. See the changelog [1] or bug
104 [2].

> Is the SimpleResolver thread safe?

Yes.

Ingo

[1] https://github.com/dnsjava/dnsjava/blob/master/Changelog
[2] https://github.com/dnsjava/dnsjava/issues/104