This document is a Mac OS X manual page. Manual pages are a command-line technology for providing documentation. You can view these manual pages locally using the man(1) command. These manual pages come from many different sources, and thus, have a variety of writing styles.

For more information about the manual page format, see the manual page for manpages(5).

SHUTDOWN(2)                 BSD System Calls Manual                SHUTDOWN(2)

NAME
     shutdown -- shut down part of a full-duplex connection

SYNOPSIS
     #include <sys/socket.h>

     int
     shutdown(int socket, int how);

DESCRIPTION
     The shutdown() call causes all or part of a full-duplex connection on the
     socket associated with socket to be shut down.  If how is SHUT_RD, fur-ther further
     ther 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
     disallowed.

RETURN VALUES
     The shutdown() function returns the value 0 if successful; otherwise the
     value -1 is returned and the global variable errno is set to indicate the
     error.

ERRORS
     The call succeeds unless:

     [EBADF]            Socket is not a valid descriptor.

     [EINVAL]           The how argument is invalid.

     [ENOTCONN]         The specified socket is not connected.

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

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