SHUTDOWN
Section: POSIX Programmer's Manual (3P)
Updated: 2013
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PROLOG
This manual page is part of the POSIX Programmer's Manual.
The Linux implementation of this interface may differ (consult
the corresponding Linux manual page for details of Linux behavior),
or the interface may not be implemented on Linux.
NAME
shutdown
--- shut down socket send and receive operations
SYNOPSIS
#include <sys/socket.h>
int shutdown(int socket, int how);
DESCRIPTION
The
shutdown()
function shall cause all or part of a full-duplex connection on the
socket associated with the file descriptor
socket
to be shut down.
The
shutdown()
function takes the following arguments:
- socket
-
Specifies the file descriptor of the socket.
- how
-
Specifies the type of shutdown. The values are as follows:
-
- SHUT_RD
-
Disables further receive operations.
- SHUT_WR
-
Disables further send operations.
- SHUT_RDWR
-
Disables further send and receive operations.
The
shutdown()
function disables subsequent send and/or receive operations on a
socket, depending on the value of the
how
argument.
RETURN VALUE
Upon successful completion,
shutdown()
shall return 0; otherwise, -1 shall be returned and
errno
set to indicate the error.
ERRORS
The
shutdown()
function shall fail if:
- EBADF
-
The
socket
argument is not a valid file descriptor.
- EINVAL
-
The
how
argument is invalid.
- ENOTCONN
-
The socket is not connected.
- ENOTSOCK
-
The
socket
argument does not refer to a socket.
The
shutdown()
function may fail if:
- ENOBUFS
-
Insufficient resources were available in the system to perform the
operation.
The following sections are informative.
EXAMPLES
None.
APPLICATION USAGE
None.
RATIONALE
None.
FUTURE DIRECTIONS
None.
SEE ALSO
getsockopt(),
pselect(),
read(),
recv(),
recvfrom(),
recvmsg(),
send(),
sendto(),
setsockopt(),
socket(),
write()
The Base Definitions volume of POSIX.1-2008,
<sys_socket.h>
COPYRIGHT
Portions of this text are reprinted and reproduced in electronic form
from IEEE Std 1003.1, 2013 Edition, Standard for Information Technology
-- Portable Operating System Interface (POSIX), The Open Group Base
Specifications Issue 7, Copyright (C) 2013 by the Institute of
Electrical and Electronics Engineers, Inc and The Open Group.
(This is POSIX.1-2008 with the 2013 Technical Corrigendum 1 applied.) In the
event of any discrepancy between this version and the original IEEE and
The Open Group Standard, the original IEEE and The Open Group Standard
is the referee document. The original Standard can be obtained online at
http://www.unix.org/online.html .
Any typographical or formatting errors that appear
in this page are most likely
to have been introduced during the conversion of the source files to
man page format. To report such errors, see
https://www.kernel.org/doc/man-pages/reporting_bugs.html .
Index
- PROLOG
-
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- RETURN VALUE
-
- ERRORS
-
- EXAMPLES
-
- APPLICATION USAGE
-
- RATIONALE
-
- FUTURE DIRECTIONS
-
- SEE ALSO
-
- COPYRIGHT
-
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