[tor-bugs] #30924 [Core Tor/Tor]: hs-v3: Implement proposal 305 - ESTABLISH_INTRO Cell DoS Defense Extension

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#30924: hs-v3: Implement proposal 305 -  ESTABLISH_INTRO Cell DoS Defense Extension
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 Reporter:  dgoulet                              |          Owner:  dgoulet
     Type:  enhancement                          |         Status:
                                                 |  needs_review
 Priority:  Medium                               |      Milestone:  Tor:
                                                 |  0.4.2.x-final
Component:  Core Tor/Tor                         |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  tor-hs, tor-spec, prop305, network-  |  Actual Points:
  team-roadmap-august                            |
Parent ID:  #29999                               |         Points:  7
 Reviewer:  asn                                  |        Sponsor:
                                                 |  Sponsor27-must
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Comment (by asn):

 Replying to [comment:3 dgoulet]:
 > Branch: ticket30924_042_01
 > PR: https://github.com/torproject/tor/pull/1232
 >
 > This is working well with chutney. On today git master, the HS won't
 send the extension since no relay supports it.
 >
 > The service side only honors the torrc options, it does NOT look at the
 consensus parameters. The intro point is the one looking at those if the
 cell extension is not seen.

 Did an initial high-level review of the code. I did not actually look at
 the nitty-gritty details (e.g. low-level parsing/encoding) yet. I'll also
 wait for the tor-dev thread with the intro point behavior.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/30924#comment:4>
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