[tor-bugs] #15621 [Tor]: Kill the pre-version 3 intro protocol code with fire.

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#15621: Kill the pre-version 3 intro protocol code with fire.
-------------------------+------------------------------------
 Reporter:  yawning      |          Owner:
     Type:  enhancement  |         Status:  new
 Priority:  normal       |      Milestone:  Tor: 0.2.7.x-final
Component:  Tor          |        Version:  Tor: unspecified
 Keywords:  tor-hs       |  Actual Points:
Parent ID:               |         Points:
-------------------------+------------------------------------
 We still have code for dealing with version 0, 1, and 2 of the HS intro
 protocol.

 From rend-spec.txt:
 {{{
 As of Tor 0.2.0.7-alpha and 0.1.2.18, clients switched to using the v2
 intro format.
 }}}

 From the release notes:
 {{{
 Bugfix on 0.2.1.6-alpha, when the v3 intro-point protocol (the first one
 which sent a timestamp field in the INTRODUCE2 cell) was introduced;
 }}}

 Anything that generates INTRODUCE cells with these versions are long dead,
 so the code for handling this protocol version should be removed.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/15621>
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