[tor-bugs] #12535 [Pluggable transport]: goptlib should expose a SOCKS5 server instead of SOCKS4a.

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#12535: goptlib should expose a SOCKS5 server instead of SOCKS4a.
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     Reporter:  yawning  |      Owner:  yawning
         Type:  defect   |     Status:  assigned
     Priority:  normal   |  Milestone:
    Component:           |    Version:
  Pluggable transport    |   Keywords:  goptlib, socks, tbb-4.5-alpha,
   Resolution:           |  TorBrowserTeam201504
Actual Points:           |  Parent ID:  #12130
       Points:           |
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Comment (by yawning):

 Option 3:

  * I merge this into obfs4proxy, and tag 0.0.5.
 (https://github.com/Yawning/obfs4/compare/socks5)
  * Y'all update the tag to 0.0.5.

 I'm personally leaning toward this approach since I'm tired of this
 sitting in limbo, this fixes the problem from my perspective, and all
 copies of obfs4proxy will have IPv6 support regardless of what version of
 goptlib they are linked against (Though `golang-goptlib-dev` needs to be
 rebuilt anyway since it's lacking the workaround for #15240, I should
 bother the packager about that.).

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/12535#comment:23>
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