as long as you can establish a tcp/ip, yes.
The last version of Flash Player (version 10) also supports udp.
UPNP is built on HTTP running over UDP, why does TCP matter?
So the response at http://forums.adobe.com/message/900939#900939 about UDP support is wrong? If so, what is the package in actionscript that contains built-in UDP support?
Thanks so much!
A Upnp implementation CAN be built on tcp/ip.
As for Udp, Flash Player 10 supports udp but does not expose API to programmers, so you cannot use it via code, as correctly stated in the post you reported.