STP4020_SOCKET_BUSY
h->flags |= STP4020_SOCKET_BUSY;
if ((h->flags & STP4020_SOCKET_BUSY) == 0) {
h->flags |= STP4020_SOCKET_BUSY;
if (h->flags & STP4020_SOCKET_BUSY) {
h->flags &= ~STP4020_SOCKET_BUSY;
if ((h->flags & STP4020_SOCKET_BUSY) == 0) {