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This PR fixes the way shutdowns are being invoked.
The behavior before this change was correct in previous versions of the shutdown logic. However, I updated the way shutdown events are propagated in #381, and since then, the broker has stopped propagating the
KeyboardInterrupt
exception. As a result, theshutdown()
method was not being called.Fun observation: the hard-kill logic still throws a
KeyboardInterrupt
exception, and if the hard-kill is triggered quickly enough, the shutdown will occur correctly.Fixes #424.