shutdown(2)                DG/UX 4.30                 shutdown(2)



     NAME
          shutdown - Shut down part of a full-duplex connection.

     SYNOPSIS
          int   shutdown  (s, how)
          int             s;
          int             how;

     PARAMETERS
          s              File descriptor of socket to shut down.


          how            Flag for what to shut down.

     DESCRIPTION
          The shutdown call shuts down all or part of a full-duplex
          connection on the socket associated with <s>.  If <how> is
          0, then further receives will be disallowed.  If <how> is 1,
          then further sends will be disallowed.  If <how> is 2, then
          further sends and receives will be disallowed.

     ACCESS CONTROL
          None.

     RETURN VALUE
          0              Completed successfully.


          -1             An error occurred.  Errno is set to indicate
                         the error.

     EXCEPTIONS
          Errno may be set to one of the following error codes:


          EBADF          The argument <s> is not an active valid
                         descriptor.


          ENOTSOCK       <s> is a file, not a socket.


          ENOTCONN       The specified socket is not connected.

          EINVAL         The <how> parameter is out of range.

     SEE ALSO
          The related manual sections:  connect(2), socket(2).







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