[tahoe-lafs-trac-stream] [Tahoe-LAFS] #2896: intermittent allmydata.test.test_introducer.NonV1Server.test_failure failure

[Tahoe-LAFS]

#2896: intermittent allmydata.test.test_introducer.NonV1Server.test_failure
failure
-------------------------+-----------------------
     Reporter:  exarkun  |      Owner:
         Type:  defect   |     Status:  new
     Priority:  normal   |  Milestone:  undecided
    Component:  code     |    Version:  1.12.1
   Resolution:           |   Keywords:  test
Launchpad Bug:           |
-------------------------+-----------------------

Comment (by exarkun):

 It looks like `Tub.stopService` doesn't actually wait for its (Foolscap)
 `Broker` connections to close.  Instead, it closes them and waits about a
 reactor tick ("eventually").  Evidently this is good enough most of the
 time but it's not a guarantee the connections will have been closed in
 time.

 Fortunately, `Broker` already has an API for being notified when its
 connection is actually lost.  Unfortunately, for some reason,
 `Tub.stopService` explicitly disables that functionality when
 disconnecting its `Broker`s!  I don't know why it does this.

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Ticket URL: <https://tahoe-lafs.org/trac/tahoe-lafs/ticket/2896#comment:2>
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