+ * message response signaling and logging
+ * prevent double taps by not sending the same key press twice within 200ms
+ * fall back to the primary client when
+ CCECProcessor::HandleLogicalAddressLost() and no client could be found
+ * no more delay up to 2 seconds when exiting libCEC
+ * rpi: current firmware first sends a change to logical address 'broadcast'
+ and then signals us that the address was lost. libCEC then failed to
+ re-register, because it didn't know any client at this address