[Nice] upnp support on windows

[Tom Kaminski]

I am using libnice under windows and I have the library compiled
without upnp support.  I am trying to learn more about upnp and
evaluating the feasibility of compiling it in.  I have found that
there is already a version of libgupnp that has been ported to windows
(see: http://gitorious.org/~phako/gupnp/phako-gupnp) but the gupnp-igd
library doesn't seem to have been ported yet, but my guess is that it
would be easy to port because it's a simple API.

Has anyone successfully compiled libnice with upnp under windows yet?
Is upnp support actually useful?  How often would upnp be essential to
connectivity?

BTW, libnice is being used in a windows PC game: "Clones" that was
released on Nov 19th.  It's been working good for the most part, but
occasionally there are cases where connection establishment fails.
This is why I am investigating upnp support.

Thanks,
Tom