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SHUTDOWN(2)                 BSD System Calls Manual                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
     The shutdown() function returns the value 0 if successful; otherwise the value -1 is returned and the
     global variable errno is set to indicate the error.

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), socket(2)

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

4.2 Berkeley Distribution        June 4, 1993        4.2 Berkeley Distribution