The shutdown() call shuts down all or part of a full-duplex
connection on the socket associated with s. If how is SHUT_RD, further receives are disallowed.
If how is SHUT_WR, further sends
are disallowed. If how is SHUT_RDWR,
further sends and receives are disallowed.
The how values should be defined constants.
RETURN VALUES
0 is returned if the call succeeds.
-1 is returned if the call fails.
ERRORS
The call succeeds unless one of the following conditions exists:
EBADF
The s value is not a valid file descriptor.
ENOMEM
Insufficient
user memory is available for the operation to complete.
ENOSR
Insufficient STREAMS resources are available for the operation
to complete.
ENOTCONN
The specified socket is not connected.
ENOTSOCK
The s value is not a socket.
ATTRIBUTES
See attributes(5)
for descriptions of the following attributes: