[tor-bugs] #30767 [Applications/Tor Browser]: Custom obfs4 bridge does not work on Tor Browser for Android

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#30767: Custom obfs4 bridge does not work on Tor Browser for Android
-------------------------------------------------+-------------------------
 Reporter:  gk                                   |          Owner:  tbb-
                                                 |  team
     Type:  defect                               |         Status:  new
 Priority:  High                                 |      Milestone:
Component:  Applications/Tor Browser             |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  tbb-parity, tbb-mobile,              |  Actual Points:
  TorBrowserTeam201909                           |
Parent ID:  #31284                               |         Points:
 Reviewer:                                       |        Sponsor:
                                                 |  Sponsor30-can
-------------------------------------------------+-------------------------
Changes (by sysrqb):

 * cc: sisbell (added)
 * keywords:  tbb-parity, tbb-mobile, TorBrowserTeam201906 => tbb-parity,
     tbb-mobile, TorBrowserTeam201909


Comment:

 Notice the missing ClientTransportPlugin line for obfs4proxy.

 {{{
 generic_x86:/ # cat
 /data/data/org.torproject.torbrowser_alpha/app_torservice/torrc
 AutomapHostsOnResolve 1
 ControlPortWriteToFile
 /data/user/0/org.torproject.torbrowser_alpha/app_torservice/lib/tor/control.txt
 ControlPort auto
 CookieAuthentication 1
 CookieAuthFile
 /data/user/0/org.torproject.torbrowser_alpha/app_torservice/lib/tor/control_auth_cookie
 DisableNetwork 1
 DNSPort 5400
 HTTPTunnelPort 8218
 ReducedConnectionPadding 1
 RunAsDaemon 1
 SafeSocks 0
 SOCKSPort 9150 KeepAliveIsolateSOCKSAuth IPv6Traffic PreferIPv6
 StrictNodes 0
 TestSocks 0
 TransPort 9140
 VirtualAddrNetwork 10.192.0.0/10
 Bridge obfs4 123.234.345.456:3322 AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
 cert=asdfasdf
 UseBridges 1
 }}}

 It's because we only
 [https://github.com/sisbell/Tor_Onion_Proxy_Library/blob/master/universal/src/main/java/com/msopentech/thali/toronionproxy/TorConfigBuilder.java#L102
 add the ClientTransportPlugin line] for the default bridges.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/30767#comment:5>
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