Socket service creation
A socket service object is an encapsulation of a user-defined processor
for a list of sockets.
Create the socket service (usually only internally used)
create_server_socket service_name proto addr: Creates a server socket
as specified in proto for the address addr and returns it.
create_server_socket service_name proto addr
Addresses of type `Container are not supported.
Closes a socket as opened with create_server_socket
Interprets a file name as connector for a local RPC service. The
file must either be a Unix Domain socket, or it must be a text
file as written by Netplex with the details of the service
Returns the RPC client connector for this Netplex address