NG_BTSOCKET_RFCOMM_DLC_CLOSED
pcb->state = NG_BTSOCKET_RFCOMM_DLC_CLOSED;
pcb->state = NG_BTSOCKET_RFCOMM_DLC_CLOSED;
while (pcb->state != NG_BTSOCKET_RFCOMM_DLC_CLOSED)
case NG_BTSOCKET_RFCOMM_DLC_CLOSED: