Server Unavailable

The MQTT server is not available. Sent in a CONNACK packet when the server is temporarily unable to accept the connection, for example during an overload or maintenance window.

References

docs.oasis-open.org/mqtt/mqtt/v5.0/os/mqtt-v5.0-os.html

In this namespace

← previous ServerShuttingDown Server Shutting Down next → SessionTakenOver Session Taken Over

ReceiveMaximumExceeded RetainNotSupported ServerBusy ServerMoved ServerShuttingDown ServerUnavailable SessionTakenOver SharedSubscriptionsNotSupported SubscriptionIdentifiersNotSupported Success TopicAliasInvalid