[tor-bugs] #25139 [Core Tor/Tor]: Link protocol negotiation without common version

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#25139: Link protocol negotiation without common version
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 Reporter:  atagar                         |          Owner:  (none)
     Type:  defect                         |         Status:  new
 Priority:  Low                            |      Milestone:  Tor:
                                           |  0.3.5.x-final
Component:  Core Tor/Tor                   |        Version:
 Severity:  Minor                          |     Resolution:
 Keywords:  spec-compliance protocol easy  |  Actual Points:
Parent ID:                                 |         Points:
 Reviewer:                                 |        Sponsor:
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Comment (by jvsg):

 `channel_tls_process_versions_cell(...)` in channeltls.c calls
 `connection_or_close_for_error(...)` which is responsible for killing
 connections. This function is called from several other places too.

 We should not only implement this functionality for cases where the
 versions dont match, but we should also implement it for several other
 cases where a feedback might be useful for the client to know where it's
 going wrong.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/25139#comment:2>
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