Tasks linger in celery amqp when publisher is terminated

I am using Celery with a RabbitMQ server. I have a publisher, which could potentially be terminated by a SIGKILL and since this signal cannot be watched, I cannot revoke the tasks. What would be a common approach to revoke the tasks where the publisher is not alive anymore?

I experimented with an interval on the worker side, but the publisher is obviously not registered as a worker, so I don't know how I can detect a timeout

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