[tor-bugs] #17178 [Tor]: Single Onion Services: One-Hop Intro Point and Rendezvous

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#17178: Single Onion Services: One-Hop Intro Point and Rendezvous
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 Reporter:  teor                |          Owner:
     Type:  enhancement         |         Status:  needs_revision
 Priority:  Medium              |      Milestone:  Tor: 0.2.8.x-final
Component:  Tor                 |        Version:
 Severity:  Normal              |     Resolution:
 Keywords:  028-triaged tor-hs  |  Actual Points:
Parent ID:                      |         Points:  large
  Sponsor:  SponsorU            |
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Changes (by teor):

 * status:  needs_review => needs_revision
 * severity:   => Normal


Comment:

 The one-hop circuits that were created by this code weren't marked as one-
 hop, which caused a info-level bug log message in the pathbias code.

 I've pushed a fixup to the branch `hs-route-len-v2`.
 There's also a branch with the same changes based on Tor 0.2.6.10 at `hs-
 route-len-02610`.

 I think this code needs a redesign (and a proposal) before it is merged,
 to:
 * get community consensus on the tradeoffs between efficiency, features,
 and splitting the hidden service anonymity set
 * collapse the two experimental options into a single option like
 `OnionServerOneHop 1`, which would do the equivalent of
 `__OnionSrvIntroRouteLength 1 __OnionSrvRendRouteLength 0`
 * (I also dislike that one-hop paths need to have one of these settings as
 1, and the other as 0. This should be handled internally and not exposed
 to operators.)

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/17178#comment:7>
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