Sets the blocking mode of a given filehandle. For information on nonblocking IO see open(2) an look for O_NONBLOCK.
PARAMETERS
fh
The filehandle to set the new state on.
state
The new state. This may be ROAR_SOCKET_BLOCK to sett blocking or ROAR_SOCKET_NONBLOCK to set nonblocking mode.
ROAR_SOCKET_NONBLOCK is the same as setting O_NONBLOCK within open(2).
RETURN VALUE
On success these calls return 0. On error, -1 is returned.