[Bugs] #1549 UNSP: Collaboration faults when resuming and then stopping a shared activity before connections are sucessfull

[Sugar Labs Bugs]

#1549: Collaboration faults when resuming and then stopping a shared activity
before connections are sucessfull
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    Reporter:  garycmartin                |          Owner:  tomeu      
        Type:  defect                     |         Status:  new        
    Priority:  Unspecified by Maintainer  |      Milestone:  0.88       
   Component:  sugar                      |        Version:  0.86.x     
    Severity:  Critical                   |       Keywords:             
Distribution:  Unspecified                |   Status_field:  Unconfirmed
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Comment(by garycmartin):

 The test case is to use two Sugar clients, have client 1 share an activity
 (I've tested with Chat, TurtleArt, Calculate), have client 2 join. Make
 sure both are collaborating correctly. Stop the client 2s activity. Resume
 client 2s activity (from either Journal or the Neighbourhood view) and
 immediately "Stop". Note that client 1 will see you 'join' ~10sec later
 even though client 2s activity is now stopped, client 1 will display
 client 2s buddy icon in the activities right frame, and also show client
 2s buddy as joined in the Neighbourhood view. Attempt to re-join the
 activity from client 2 will fail to connect. Stop client 2s activity. Re-
 re-join from client 2 and it'll succeed this time.

 It's quite useful to have a 3rd client sitting in Neighbourhood view so
 you can watch the buddy icons move back and forth as you test.

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Ticket URL: <http://bugs.sugarlabs.org/ticket/1549#comment:1>
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