Create a connection of an arbitrary type

Provide a generic way to create a connection of an arbitrary type and from a particular domain

Division of two peers on server and client is purely abstract, because actually just after creating a connection of type SOCK_STREAM we close real server socket and associate its child socket, with srvr_s parameter of the function.

For connection of type SOCK_STREAM use algorithm Create a connection with connection oriented sockets.

For connection of type SOCK_DGRAM use algorithm Create a connectionless pair of sockets that can communicate with each other without specifying any addresses in their I/O operations.

Parameters:

srvr	PCO where server socket is created
clnt	PCO where client socket is created
sock_type	Socket type used in the connection
proto	Protocol for the connection
srvr_addr	Server address to be used as a template for bind() on server side
clnt_addr	Address to bind client to
srvr_s	Descriptor of the socket reside on srvr (accepted socket in the case of stream connection) (OUT)
clnt_s	Descriptor of the socket reside on clnt (OUT)