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Re: UPnP Support

Hi Mark,

I'm seeing more and more UPnP support, is there UPnP service on MacOS-X
somewhere which can be used ?. I know of Apple's Bonjour, but I see a lot of
ISP like automatic network setup which UPnP gives (also auto Port setup),
which is kindya nice.

"UPnP support" is a broad term that doesn't mean a whole lot. I'm not sure what you mean by "ISP like automatic network setup", but it sounds like what you're really asking is if Mac OS X has support for setting up port mappings in NAT routers. Currently, the mDNSResponder contains code for setting up port mappings in both the AirPort base station via a protocol called NAT-PMP, and also supports setting up port mappings using the UPnP internet gateway protocol. This code is triggered when you register services via wide-area Bonjour while behind a NAT. We've had requests to export the NAT port mapping code via its own API so it could be callable by any application, and are considering this for a future release.

In the mean time, since mDNSResponder is open source, you could easily take this code and attempt to build it directly into your application.

<http://www.opensource.apple.com/darwinsource/tarballs/apsl/ mDNSResponder-107.5.tar.gz>

The file you'll need is called LegacyNATTraversal.c and it's inside the mDNSMacOSX folder.

Hope that helps.
-Marc

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