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

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

LIBRARY
     Standard C	Library	(libc, -lc)

SYNOPSIS
     #include <sys/socket.h>

     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.	The how	argument specifies
     which part	of the connection will be shut down.  Permissible values are:

	   SHUT_RD	further	receives will be disallowed.

	   SHUT_WR	further	sends will be disallowed.

	   SHUT_RDWR	further	sends and receives will	be disallowed.

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

ERRORS
     The call succeeds unless:

     [EBADF]		s is not a valid descriptor.

     [EINVAL]		The how	argument is invalid.

     [ENOTCONN]		The specified socket is	not connected.

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

SEE ALSO
     connect(2), socket(2)

HISTORY
     The shutdown() function call appeared in 4.2BSD.  The how arguments used
     to	be simply 0, 1,	and 2, but now have named values as specified by
     X/Open Portability	Guide Issue 4 ("XPG4").

BSD				August 18, 2002				   BSD

NAME | LIBRARY | SYNOPSIS | DESCRIPTION | RETURN VALUES | ERRORS | SEE ALSO | HISTORY

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