[tor-bugs] #3309 [Tor Hidden Services]: SIGNAL NEWNYM should clear the last_hid_serv_requests table

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#3309: SIGNAL NEWNYM should clear the last_hid_serv_requests table
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 Reporter:  rransom              |          Owner:  rransom           
     Type:  defect               |         Status:  needs_review      
 Priority:  major                |      Milestone:  Tor: 0.2.2.x-final
Component:  Tor Hidden Services  |        Version:                    
 Keywords:                       |         Parent:                    
   Points:                       |   Actualpoints:                    
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Comment(by nickm):

 Replying to [comment:4 Sebastian]:
 > The situation I want to avoid is that we hear advice like "oh, hs
 doesn't work for you? Just newnym for good measure" because we should only
 advice newnym usage when the user actually wants a new nym.

 I think rransom's argument here is that if we _don't clear
 last_hid_serv_requests on NEWNYM, then our other NEWNYM fix (where we
 clear the hidserv descriptor cache on newnym) can break hidden service
 requests, if we have fetched the descriptor from every viable hsdir too
 recently.  So this is less about the linkability issue and more about the
 fact that our other linkability fix broke robustness.

 Have I got that right?  And does it make sense?

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/3309#comment:6>
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