[tor-bugs] #9072 [Tor]: #9063 enables Guard discovery in about an hour by websites

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#9072: #9063 enables Guard discovery in about an hour by websites
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 Reporter:  arma      |          Owner:                     
     Type:  defect    |         Status:  needs_review       
 Priority:  critical  |      Milestone:  Tor: 0.2.3.x-final 
Component:  Tor       |        Version:  Tor: 0.2.4.13-alpha
 Keywords:            |         Parent:                     
   Points:            |   Actualpoints:                     
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Comment(by nickm):

 rransom said:
 > Instead of closing circuits or connections in response to OOM, you could
 check whether the relay has hit its rate limit, and if it hasn't, send a
 bunch of cells along the circuit/connection. (Perhaps the next relay will
 have more room for them.)

 That sounds plausible as a reliability improvement, but unless I
 misunderstand, it won't actually prevent any DOS here, since the recipient
 could just stop reading and thereby make the sender's TCP implementation
 refuse to write any more.

 > How long are cell queues for normal clients' circuits and connections in
 practice?

 Less than 1000; I don't know how much less.

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/9072#comment:19>
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