Question: Avoid handlers from picking up dead lettered messages?

[n321203]

Hi, I am learning wascally and like it this far. There's something I don't understand about the handlers:

Fact 1: handlers are not bound to a specific exchange or queue, but to a message type.

Fact 2: when using dead-lettering, a rejected message is sent to a dead-letter-exchange with (possibly) a new routingKey, but the message type is unchanged.

This means that the original handler will pick up the rejected message once again.

What have I missed here – how do you use dead-lettering with wascally? It seems you have to add a check in every handler that the received message isn't dead already (if you don't wanna try processing it again... but then I would have nack it instead of rejectit...).

[n321203]

Update: I have solved this by setting a routingKey on each message, and never set a message type. This way, the handlers fall back to using routingKeys (since message types are not available).
The dead-lettering-exchange changes the routingKey, which means a separate handler picks up all rejected messages.