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See #223. The problem was that at some previous stage, the
SubscribeUnreachable
mechanism was switched from sendingUnreachableMessage
to sendingmap[string]string
, but this change was only partially completed. This didn't cause any errors because theBroker
class takesinterface{}
, so it passed these messages through just fine, but then they weren't processed on the receiving side.This PR adds type enforcement to the
Broker
class, and adds a newUnreachableNotification
struct, which includesUnreachableMessage
and also the additional information of which node the message was received from.