[det]tipc_open_socket(+SocketId, 
-InStream, -OutStream)Opens two SWI-Prolog I/O-streams, one to deal with input from the socket 
and one with output to the socket. If tipc_bind/3 
has been called on the socket, OutStream is useless and will 
not be created. After closing both InStream and OutStream, 
the socket itself is discarded.