int
     shutdown(int s, int how);

DESCRIPTION

     The shutdown() call causes all or part of a full-duplex connection on the
     socket associated with s to be shut down.  If how is SHUT_RD, further
     receives will be disallowed.  If how is SHUT_WR, further sends will be
     disallowed.  If how is SHUT_RDWR, further sends and receives will be dis-
     allowed.

DIAGNOSTICS

     A 0 is returned if the call succeeds, -1 if it fails.

ERRORS

     The call succeeds unless:

     [EBADF]            S is not a valid descriptor.

     [ENOTSOCK]         S is a file, not a socket.

     [ENOTCONN]         The specified socket is not connected.

SEE ALSO

     connect(2), socket(2)

HISTORY

     The shutdown() function call appeared in 4.2BSD.

4.2 Berkeley Distribution        June 4, 1993        4.2 Berkeley Distribution