[tor-bugs] #27053 [Core Tor/Stem]: Check controller's event error handling

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#27053: Check controller's event error handling
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 Reporter:  atagar         |          Owner:  atagar
     Type:  defect         |         Status:  new
 Priority:  Very High      |      Milestone:
Component:  Core Tor/Stem  |        Version:
 Severity:  Major          |     Resolution:
 Keywords:                 |  Actual Points:
Parent ID:                 |         Points:
 Reviewer:                 |        Sponsor:
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Comment (by mikeperry):

 Related: if a controller itself messes up handling an event callback and
 throws an arbitrary exception, it should have a way to know that this
 happened, so it can decide to exit. Or perhaps equivalently for my
 purposes: if stem just exits the program in this case.

 Without this, controllers that are supposed to be long-lived might sit
 around in a zombie-state where users think they are running, but they
 actually are not reacting to anything.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/27053#comment:1>
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