.\" Copyright (c) 1983, 1991, 1993
.\"	The Regents of the University of California.  All rights reserved.
.\"
.\" %sccs.include.redist.man%
.\"
.\"     @(#)shutdown.2	8.1 (Berkeley) 06/04/93
.\"
.Dd 
.Dt SHUTDOWN 2
.Os BSD 4.2
.Sh NAME
.Nm shutdown
.Nd shut down part of a full-duplex connection
.Sh SYNOPSIS
.Fd #include <sys/socket.h>
.Ft int
.Fn shutdown "int s" "int how"
.Sh DESCRIPTION
The
.Fn shutdown
call causes all or part of a full-duplex connection on
the socket associated with
.Fa s
to be shut down.
If
.Fa how
is 0, further receives will be disallowed.
If
.Fa how
is 1, further sends will be disallowed.
If
.Fa how
is 2, further sends and receives will be disallowed.
.Sh DIAGNOSTICS
A 0 is returned if the call succeeds, -1 if it fails.
.Sh ERRORS
The call succeeds unless:
.Bl -tag -width ENOTCONNAA
.It Bq Er EBADF
.Fa S
is not a valid descriptor.
.It Bq Er ENOTSOCK
.Fa S
is a file, not a socket.
.It Bq Er ENOTCONN
The specified socket is not connected.
.El
.Sh SEE ALSO
.Xr connect 2 ,
.Xr socket 2
.Sh HISTORY
The
.Nm
function call appeared in
.Bx 4.2 .