netconf:list-devices throws a NullPointerException

When initiate a connection to a netconf device, the operational data store of this device will be set as failed as below if the negotiation fails:

NetconfDeviceTopologyAdapter.java

void setDeviceAsFailed(final Throwable throwable)

{ final NetconfNode data = new NetconfNodeBuilder() .setConnectionStatus(ConnectionStatus.UnableToConnect).setConnectedMessage(reason).build(); ... }

method setDeviceAsFailed() just write ConnectionStatus and ConnectedMessage to operational data store, and netconf:list-devices command will not find Host and Port, then a NullPointerException will be thrown