[tor-bugs] #7153 [Pluggable transport]: Don't require pluggable transport proxies to be SOCKS proxies

Tor Bug Tracker & Wiki blackhole at torproject.org
Mon Mar 11 18:55:54 UTC 2013


#7153: Don't require pluggable transport proxies to be SOCKS proxies
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 Reporter:  karsten              |          Owner:  asn
     Type:  project              |         Status:  new
 Priority:  normal               |      Milestone:     
Component:  Pluggable transport  |        Version:     
 Keywords:  SponsorF20130228     |         Parent:     
   Points:                       |   Actualpoints:     
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Comment(by zwol):

 Sorry for dropping the ball on this again.

 Nick's proposal appears almost entirely orthogonal to the problems
 StegoTorus has with doing SOCKS; it appears mostly about improving
 communication between Tor and a controller process, which ST isn't.  The
 "configuration may be too large for a SOCKS connection request" issue,
 which is probably the most important, is only addressed by saying that
 it's okay to require use of SOCKS4a (which has no official upper limit)
 and I do not feel comfortable relying on that; the actual implementation
 in ST right now does have an upper limit (chosen arbitrarily, according to
 comments) and I am concerned that pluggable transports may all pick
 different arbitrary cutoffs and we'll have a big mess.  My other concerns
 (number of marshal/unmarshal passes, additional implementation costs of
 having SOCKS code at all) do not seem to have been addressed at all.

 I don't understand the stated objection to a "just start talking OR on
 this local port" bridge method:

 > (Tor really needs to have some idea when it's making connections to the
 same bridge or not.)

 Any given ST local-port talks to one and only one bridge, whose key
 fingerprint is (optionally) specified on the "direct" Bridge line.  This
 would seem to be a non-problem.

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/7153#comment:20>
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