Name

shutdown — shut down part of a full-duplex connection

Synopsis

#include <sys/socket.h>
int shutdown( int sockfd,
  int how);
 

DESCRIPTION

The shutdown() call causes all or part of a full-duplex connection on the socket associated with sockfd 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

sockfd is not a valid descriptor.

ENOTCONN

The specified socket is not connected.

ENOTSOCK

sockfd is a file, not a socket.

CONFORMING TO

POSIX.1-2001, 4.4BSD (the shutdown() function call first appeared in 4.2BSD).

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.

SEE ALSO

connect(2), socket(2), socket(7)

COLOPHON

This page is part of release 3.24 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/.


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    $Id: shutdown.2,v 1.1.1.1 1999/03/21 22:52:23 freitag Exp $

Modified Sat Jul 24 09:57:55 1993 by Rik Faith <faithcs.unc.edu>
Modified Tue Oct 22 22:04:51 1996 by Eric S. Raymond <esrthyrsus.com>
Modified 1998 by Andi Kleen