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shutdown(2) -- Linux man page
NAME
shutdown - shut down part of a full-duplex connection
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. If
how
is
SHUT_RD,
further receptions will be disallowed. If
how
is
SHUT_WR,
further transmissions will be disallowed. If
how
is
SHUT_RDWR,
further receptions and transmissions will be disallowed.
RETURN VALUE
On success, zero is returned. On error, -1 is returned, and
errno
is set appropriately.
ERRORS
- EBADF
-
s
is not a valid descriptor.
- ENOTSOCK
-
s
is a file, not a socket.
- ENOTCONN
-
The specified socket is not connected.
NOTES
The constants SHUT_RD, SHUT_WR, SHUT_RDWR have the value 0, 1, 2,
respectively, and are defined in
<sys/socket.h>
since glibc-2.1.91.
CONFORMING TO
4.4BSD (the
shutdown
function call first appeared in 4.2BSD).
SEE ALSO
connect(2),
socket(2)
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