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 3.23 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/.
