[tor-bugs] #21863 [Applications/Tor Browser]: Ensure proxy safety on Android

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#21863: Ensure proxy safety on Android
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 Reporter:  gk                                   |          Owner:  sysrqb
     Type:  defect                               |         Status:
                                                 |  accepted
 Priority:  Very High                            |      Milestone:
Component:  Applications/Tor Browser             |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  tbb-mobile, tbb-7.0-must, tbb-       |  Actual Points:
  proxy-bypass, TorBrowserTeam201807             |
Parent ID:  #26531                               |         Points:
 Reviewer:                                       |        Sponsor:
                                                 |  Sponsor4
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Comment (by n8fr8):

 I thought @amoghbl had found and patched all of these cases. We definitely
 focused on checking for DNS leaks in the past, using a variety of web
 based DNS leak test tools.

 The goal has been to directly proxy everything using HTTP and SOCKs, and
 not rely on the Android OS proxy subsystems at all, since they are not
 reliable, especially on WAN networks.

 This is also all related to the fact that there are 3 different HTTP
 packages in use within Fennec, making standardized proxying hard.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/21863#comment:28>
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