What kind of SCTP support is there on various Windows versions?
From the Wikipedia article:
The following operating systems implement SCTP:
- AIX Version 5
- Generic BSD with external patch at KAME project
- Cisco IOS 12
- DragonFly BSD since version 1.4
- FreeBSD, version 7 and above
- HP-UX, 11i v2 and above
- Operating systems using Linux kernel 2.4 and newer
- QNX Neutrino Realtime OS, 6.3.0 and above
- Sun Solaris 10 and above
Various third-party implementations of SCTP exist for other operating systems. FreeBSD contains the SCTP reference implementation.
Userspace library:
- The SCTP library (sctplib), with a Windows XP port.
So apparently there is no native support in Windows at all. Only through 3rd-party software or libraries.