Bridge to another broker (HiveMQ): Can incoming topics from the other broker be retained on the local Mosquitto broker?

[speckenbuettel]

Hi,

I am using a bridge between my local Mosquitto (2.0.18) and a remote broker (HiveMQ Cloud).

Can the local Mosquitto be configured in such a way that incoming topics can be retained on the local Mosquitto, even if there are no updates from the remote broker or the connection is down?

Thanks.

[ckrey]

The local mosquitto will retain incoming topic messages if the message was sent with the retained flag to the remote broker. The remote broker will propagate the retained flag.

As a result, a client subscribing to the local broker will receive the retained messages even if the remote broker is not connected.

There is no feature in MQTT/mosquitto to retaine messages for topics which are not retained originally.

Does this answer your question?