[tor-bugs] #22934 [Core Tor/Tor]: PADDING cells can't be sent immediately after a VERSIONS cell

Thu Sep 7 02:26:18 UTC 2017

#22934: PADDING cells can't be sent immediately after a VERSIONS cell
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 Reporter:  teor                 |          Owner:  nickm
     Type:  defect               |         Status:  merge_ready
 Priority:  Medium               |      Milestone:  Tor: 0.3.1.x-final
Component:  Core Tor/Tor         |        Version:  Tor: 0.3.1.1-alpha
 Severity:  Normal               |     Resolution:
 Keywords:  tor-spec, tor-relay  |  Actual Points:  .1
Parent ID:  #18856               |         Points:  0.5
 Reviewer:                       |        Sponsor:
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Changes (by teor):

 * status:  needs_review => merge_ready

Comment:

 That seems correct: VPADDING is allowed before or after VERSIONS. PADDING
 only works reliably once the handshake is complete.

 Here are the VPADDING tests:
 https://github.com/teor2345/endosome/blob/master/client-or-22929.py#L37

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/22934#comment:7>
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