SHUTDOWN(2)

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)