DDPCloseSocket
short theSocket; socket number
recommended that you use the preferred call, PCloseSkt instead. DDPCloseSocket removes a socket and its socket listener from the socket table and cancels all pending DDPRead calls that have been made for that socket.
theSocket is the socket number.
noErr (0) No error
ddpSktErr (-91) Socket error
Notes: If you pass a socket number of 0, or if you attempt to close a socket that is