New version of RTC Client API

And speaking of SDKs, you can view the docs for v1.2 of the RTC Client API and download the SDK. This is an upgrade to the v1.0 of the RTC Client API that ships with WinXP. It’s been upgraded to support Live Communication Server (previously known as RTC Server). Unlike the P2P SDK, the RTC SDK is COM based, which should be easier to wrap in managed code

More Firewall Programming

BTW, if anyone is looking, you can code programmatically control the IPv4 firewall via the ICS/ICF API. And the docs for the IPv6 firewall SDK are online.