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SHUTDOWN

Section: POSIX Programmer's Manual (3P)
Updated: 2013
Index Return to Main Contents
 

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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