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 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.

DIAGNOSTICS
A 0 is returned if the call succeeds, -1 if it fails.

ERRORS
The call succeeds unless:

[EBADF]
    S is not a valid descriptor.

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

[ENOTCONN]
    The specified socket is not connected.

SEE ALSO
connect(2), socket(2)

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