'\" te
.\"  Copyright 1989 AT&T  Copyright (c) 2005, Sun Microsystems, Inc.  All Rights Reserved
.TH shutdown 3SOCKET "31 Jan 2005" "SunOS 5.11" "Sockets Library Functions"
.SH NAME
shutdown \- shut down part of a full-duplex connection
.SH SYNOPSIS
.LP
.nf
\fBcc\fR [ \fIflag\fR... ] \fIfile\fR... \fB-lsocket\fR \fB -lnsl \fR [ \fIlibrary\fR... ]
#include <sys/socket.h>

\fBint\fR \fBshutdown\fR(\fBint\fR \fIs\fR, \fBint\fR \fIhow\fR);
.fi

.SH DESCRIPTION
.sp
.LP
The \fBshutdown()\fR call shuts down all or part of a full-duplex connection on the socket associated with \fIs\fR. If \fIhow\fR is \fBSHUT_RD\fR, further receives are disallowed. If \fIhow\fR is \fBSHUT_WR\fR, further sends are disallowed. If \fIhow\fR is \fBSHUT_RDWR\fR, further sends and receives are disallowed.
.sp
.LP
The \fIhow\fR values should be defined constants.
.SH RETURN VALUES
.sp
.LP
\fB0\fR is returned if the call succeeds.
.sp
.LP
\fB\(mi1\fR is returned if the call fails.
.SH ERRORS
.sp
.LP
The call succeeds unless one of the following conditions exists:
.sp
.ne 2
.mk
.na
\fB\fBEBADF\fR\fR
.ad
.RS 12n
.rt  
The \fIs\fR value is not a valid file descriptor.
.RE

.sp
.ne 2
.mk
.na
\fB\fBENOMEM\fR\fR
.ad
.RS 12n
.rt  
Insufficient user memory is available for the operation to complete.
.RE

.sp
.ne 2
.mk
.na
\fB\fBENOSR\fR\fR
.ad
.RS 12n
.rt  
Insufficient \fBSTREAMS\fR resources are available for the operation to complete.
.RE

.sp
.ne 2
.mk
.na
\fB\fBENOTCONN\fR\fR
.ad
.RS 12n
.rt  
The specified socket is not connected.
.RE

.sp
.ne 2
.mk
.na
\fB\fBENOTSOCK\fR\fR
.ad
.RS 12n
.rt  
The \fIs\fR value is not a socket.
.RE

.SH ATTRIBUTES
.sp
.LP
See \fBattributes\fR(5) for descriptions of the following attributes:
.sp

.sp
.TS
tab() box;
cw(2.75i) |cw(2.75i) 
lw(2.75i) |lw(2.75i) 
.
ATTRIBUTE TYPEATTRIBUTE VALUE
_
MT-LevelSafe
.TE

.SH SEE ALSO
.sp
.LP
\fBconnect\fR(3SOCKET), \fBsocket\fR(3SOCKET), \fBsocket.h\fR(3HEAD), \fBattributes\fR(5)