[tor-bugs] #20082 [Core Tor/Tor]: Lower initial descriptor upload delay for ephemeral services

Tor Bug Tracker & Wiki blackhole at torproject.org
Tue Sep 6 23:13:18 UTC 2016


#20082: Lower initial descriptor upload delay for ephemeral services
------------------------------------------------+--------------------------
 Reporter:  twim                                |          Owner:
     Type:  enhancement                         |         Status:  new
 Priority:  Medium                              |      Milestone:  Tor:
                                                |  0.2.???
Component:  Core Tor/Tor                        |        Version:
 Severity:  Normal                              |     Resolution:
 Keywords:  tor-hs, research, proposal-needed?  |  Actual Points:
Parent ID:                                      |         Points:
 Reviewer:                                      |        Sponsor:
                                                |  SponsorR-can
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Comment (by twim):

 Replying to [comment:10 teor]:
 > However, the threat here is that hidden services that have unstable
 introduction points now upload their descriptors 6x more often.
 >
 > Why don't we make the initial upload 5s, and every upload after that
 30s?
 > Or even better, some kind of exponential backoff to a few minutes - if
 you've changed your intro points ten times, we really don't want your
 eleventh descriptor any time soon.

 Yes, `rend_consider_services_upload()` function is borked and it's hard to
 tell what's going on. It's not 6x more often. 30 seconds is the initial
 delay (after descriptor became dirty). Actual upload period seems (sic!)
 to be [30s , 30s + rand(2*1h)]. The lower boundary is what is fixed. And
 fixed high for no actual benefit or security reason, IMO (see comment:8).

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/20082#comment:11>
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