[tor-bugs] #12125 [Pluggable transport]: Proposal 232 (TOR_PT_PROXY) support for goptlib

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#12125: Proposal 232 (TOR_PT_PROXY) support for goptlib
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     Reporter:  dcf                  |      Owner:  dcf
         Type:  project              |     Status:  new
     Priority:  normal               |  Milestone:
    Component:  Pluggable transport  |    Version:
   Resolution:                       |   Keywords:  goptlib
Actual Points:                       |  Parent ID:
       Points:                       |
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Comment (by yawning):

 Welp, I likewise spent the evening working on this for obfs4proxy (SOCKSv5
 works through the magic of library code, I'll write SOCKSv4/HTTP support
 next).

 My `ProxyError`/`ProxyDone` routines are basically identical.  I went with
 having a `ptGetProxy()` routine and I currently do more validation (check
 vs known scheme types, validate that the rest of the URI is sane) since I
 stole the code I wrote for pyptlib, and need to have those checks anyway.

 https://github.com/Yawning/obfs4/blob/master/obfs4proxy/pt_extras.go#L83

 Changing my code to use your interface at a later date is no problem for
 me.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/12125#comment:2>
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