NAME
shutdown - shut down part of a full-duplex connection
SYNOPSIS
#include <sys/socket.h>
I int shutdown(int s , int how );
DESCRIPTION
The
R shutdown ()
call causes all or part of a full-duplex connection on the socket
associated with
s
to be shut down.
If
how
is
R SHUT_RD ,
further receptions will be disallowed.
If
how
is
R SHUT_WR ,
further transmissions will be disallowed.
If
how
is
R 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.
ENOTCONN
The specified socket is not connected.
ENOTSOCK
s
is a file, not a socket.
CONFORMING TO
POSIX.1-2001, 4.4BSD (the
R shutdown ()
function call first appeared in 4.2BSD).
NOTES
The constants
R SHUT_RD ,
R SHUT_WR ,
SHUT_RDWR
have the value 0, 1, 2,
respectively, and are defined in
<sys/socket.h>
since glibc-2.1.91.
SEE ALSO
