Broker blacklisting can lead to endless loop if some brokers are fully offline
RalfJung opened this issue · comments
The tunneldigger clients tries to avoid selecting the same broker again and it again if it gets a connection error. It blacklists a broker upon error and tries the others, until all failed and they all get unblacklisted again.
Unfortunately, I just observed that this can lead to an endless loop: Say two brokers are configured, of which one is offline and one errors. The erroring one will get blacklisted, but the one that is offline will not. Now the client just keeps trying the offline broker, so even if the one that is online stops erroring, it does not get used.