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.TH SHUTDOWN 2
.SH NAME
shutdown \- shuts down a socket for reading, writing, or both
.SH SYNOPSIS
.ft B
#include <sys/socket.h>
.in +5
.ti -5
int shutdown(int \fIsd\fP, int \fIhow\fP);
.br
.ft P
.SH DESCRIPTION
shutdown() shuts down the socket \fIsd\fP for reading, writing,
or both reading and writing by setting \fIhow\fP to SHUT_RD,
SHUT_WR, or SHUT_RDWR.
.SH RETURN VALUES
On success, this function returns 0. On error, -1 is returned and
\fIerrno\fP is set.
.SH ERRORS
.TP 15
[EINVAL]
\fIhow\fP must be SHUT_RD, SHUT_WR, or SHUT_RDWR.
.TP 15
[ENOTCONN]
\fIsd\fP must be a connected socket.
.TP 15
[ENOSYS]
attempted to shutdown the read side of a TCP socket,
or the type of socket is not supported.
.SH SEE ALSO
.BR socket(2),
.BR socketpair(2)
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