[tor-bugs] #11629 [FTE]: FTE breaks with latest obfsproxy (because of move to SOCKS5)

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#11629: FTE breaks with latest obfsproxy (because of move to SOCKS5)
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 Reporter:  asn     |          Owner:  kpdyer
     Type:  defect  |         Status:  new
 Priority:  normal  |      Milestone:
Component:  FTE     |        Version:
 Keywords:          |  Actual Points:
Parent ID:          |         Points:
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 Hello,

 Arturo was trying to setup FTE in his OONI machine today. In his attempts,
 FTE would crash when Tor tried to spawn it.

 Here is what Arturo told me during his debugging session:
 {{{
 16:29 < asn> 16:07 < hellais> I get a useful error message
 16:29 < asn> 16:08 < hellais> AttributeError: 'module' object has no
 attribute 'SOCKSv4Factory'
 16:29 < asn> 16:08 < hellais> could it be that I have an outdated version
 of obfsproxy?
 16:29 < asn> 16:11 < hellais> oh no, I have a too new version of obfsproxy
 16:29 < asn> 16:12 < hellais> I think that
 obfsproxy.network.socks.OBFSSOCKSv4Factor used to be called
 obfsproxy.network.socks.SOCKSv4Factor
 16:29 < asn> 16:13 < hellais> actually all the SOCKSv4 stuff got removed
 in the last version of obfsproxy wereas they used to be present
 16:29 < asn> 16:13 < hellais> so users of the old API will break
 16:29 < asn> 16:14 < hellais> I would suggest you add into the
 obfsproxy.network.socks a subclass of OBFSSOCKSv5Factory called
 SOCKSv5Factory that writes a warning log stating that it's now deprecated
 }}}

 We recently moved from SOCKS4 to SOCSK5 on obfsproxy, and I forgot that
 FTE was borrowing code from obfsproxy, so we accidentally broke FTE. Sorry
 for that.

 kpdyer, how would you like to fix this?

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/11629>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
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