SHUTDOWN

NAME
SYNOPSIS
DESCRIPTION
RETURN VALUE
ERRORS
CONFORMING TO
BUGS
SEE ALSO

NAME

shutdown − shut down part of a full-duplex connection

SYNOPSIS

#include <sys/socket.h>

int shutdown(int s, int how);

DESCRIPTION

The shutdown call causes all or part of a full-duplex connection on the socket associated with s to be shut down. If how is 0, further receives will be disallowed. If how is 1, further sends will be disallowed. If how is 2, further sends and receives 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.

ENOTSOCK

s is a file, not a socket.

ENOTCONN

The specified socket is not connected.

CONFORMING TO

4.4BSD (the shutdown function call first appeared in 4.2BSD).

BUGS

The numerical how flags should be replaced by the Single Unix-mandated SHUT_RD, SHUT_WR, and SHUT_RDWR flags.

SEE ALSO

connect(2), socket(2)