[tor-bugs] #7341 [Tor]: circuit_expire_building applies CBT in twisted ways on hidden service circuits

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#7341: circuit_expire_building applies CBT in twisted ways on hidden service
circuits
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 Reporter:  mikeperry  |          Owner:     
     Type:  defect     |         Status:  new
 Priority:  normal     |      Milestone:     
Component:  Tor        |        Version:     
 Keywords:             |         Parent:     
   Points:             |   Actualpoints:     
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Comment(by mikeperry):

 Looking deeper into this, those first two purposes (6 and 5) so far all
 appear to have has_opened=1. This appears to cause circuit_expire_building
 to select the cannibalized_cutoff for them, which is *half* of the current
 circuit build timeout. For the record, they also have desired_path_len=4,
 but since has_opened=1, they don't get assinged the fourhop_cutoff
 timeout.

 Purpose 9 has the same has_opened -> cannibalized problem, but only has a
 desired_path_len of 3.

 I am tempted to simply remove the has_opened -> cannibalized timeout
 differentiation, and simply use the desired_path_len for cutoff selection.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/7341#comment:2>
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