Format of VINES argument block for opening socket:
Offset	Size	Description	)
 00h	WORD	pointer to 2-byte buffer for socket identifier
 02h	WORD	address family
		0003h Banyan
 04h	WORD	socket type
		in address family 0003h
		    0001h IPC socket
		    0002h SPP socket
 06h	WORD	protocol number
		FFFFh default
 08h	WORD	pointer to 16-byte buffer for socket address (see #03328)
 0Ah	WORD	local port number
		0000h if service should assign transient port number
		0001h to 01FFh well-known port number (assigned by Banyan)
SeeAlso: #03326