SHUTDOWN(2)

NAME
shutdown - shut down part of a full-duplex connection

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

DESCRIPTION
The shutdown() call causes all or part of a full-duplex connection on the socket associated with socket to be shut down. If how is SHUT_RD, further receives will be disallowed. If how is SHUT_WR, further sends will be disallowed. If how is SHUT_RDWR, further sends and receives will be disallowed.

RETURN VALUES

ERRORS
The call succeeds unless:

[EBADF]
    Socket is not a valid descriptor.

[EINVAL]
    The how argument is invalid.

[ENOTCONN]
    The specified socket is not connected.

[ENOTSOCK]
    Socket is a file, not a socket.

SEE ALSO
connect(2), connectx(2), disconnectx(2), socket(2)

HISTORY
The shutdown() function call appeared in 4.2BSD.