The following socket options are Microsoft-specific extensions for connect and disconnect data and options and are used only by non-TCP/IP transports such as DECNet, OSI TP4, etc. These are only used in Microsoft's implementation of Windows Sockets on NT 4.0.
SO_CONNDATA
SO_CONNOPT
SO_DISCDATA
SO_DISCOPT
SO_CONNDATALEN
SO_CONNOPTLEN
SO_DISCDATALEN
SO_DISCOPTLEN
The following socket options are Microsoft-specific extensions for controlling the size of datagrams:
SO_MAXDG
SO_MAXPATHDG