[tor-bugs] #20775 [Applications/Tor Browser Sandbox]: Use Tor Browser's integrated `AF_LOCAL` support on alpha.

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#20775: Use Tor Browser's integrated `AF_LOCAL` support on alpha.
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 Reporter:  yawning                           |          Owner:  yawning
     Type:  enhancement                       |         Status:  assigned
 Priority:  Medium                            |      Milestone:
Component:  Applications/Tor Browser Sandbox  |        Version:
 Severity:  Normal                            |     Resolution:
 Keywords:                                    |  Actual Points:
Parent ID:                                    |         Points:
 Reviewer:                                    |        Sponsor:
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Comment (by yawning):

 Sandboxed Tor Browser 7.0.1 + Bug 20775 feature branch:
 {{{
 2017/07/02 13:58:47 firefox: tbb_stub: socket(2, 0x00000001, 0)
 2017/07/02 13:58:47 firefox: tbb_stub: socket(2, 0x00000001, 0)
 }}}

 In the context of `socket()`, `2`, is `AF_INET`.  For debugging purposes,
 the stub is returning `-1`, with `errno` set to `EAFNOSUPPORT`, on the off
 chance that Firefox is freaking out about the `ENOSYS` response.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/20775#comment:8>
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