[tor-bugs] #29859 [Applications/Tor Browser]: Playing videos on Twitter is not working and freezing the mobile browser

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#29859: Playing videos on Twitter is not working and freezing the mobile browser
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 Reporter:  gk                                   |          Owner:  tbb-
                                                 |  team
     Type:  defect                               |         Status:  new
 Priority:  High                                 |      Milestone:
Component:  Applications/Tor Browser             |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  tbb-8.5, tbb-mobile,                 |  Actual Points:
  GeorgKoppen201903, TorBrowserTeam201903        |
Parent ID:                                       |         Points:
 Reviewer:                                       |        Sponsor:
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Comment (by gk):

 After some bisecting it turns out this is caused by our patching of proxy-
 bypass issues mentioned in #28125. In particular, the problem at hand
 stems from exoplayer related patch.
 {{{
 03-25 15:50:40.313   527  1326 I ExoPlayerImpl: Init ExoPlayerLib/2.4.0
 [kminilte, SM-G800F, samsung, 23]
 03-25 15:50:40.368   527  1333 I DefaultHttpDataSource: This is Tor
 Browser. Skipping.
 03-25 15:50:40.373   527  1333 I DefaultHttpDataSource: This is Tor
 Browser. Skipping.
 03-25 15:50:41.378   527  1333 I DefaultHttpDataSource: This is Tor
 Browser. Skipping.
 03-25 15:50:43.378   527  1333 I DefaultHttpDataSource: This is Tor
 Browser. Skipping.
 03-25 15:50:43.398   527  1327 E ExoPlayerImplInternal: Source error.
 03-25 15:50:43.398   527  1327 E ExoPlayerImplInternal:
 com.google.android.exoplayer2.upstream.HttpDataSource$HttpDataSourceException:
 Unable to connect to
 https://video.twimg.com/ext_tw_video/1108828787624411136/pu/pl/EagyvHO-
 kYyNBwEE.m3u8?tag=8
 03-25 15:50:43.398   527  1327 E ExoPlayerImplInternal:         at
 com.google.android.exoplayer2.upstream.DefaultHttpDataSource.open(DefaultHttpDataSource.java:197)
 03-25 15:50:43.398   527  1327 E ExoPlayerImplInternal:         at
 com.google.android.exoplayer2.upstream.DefaultDataSource.open(DefaultDataSource.java:123)
 03-25 15:50:43.398   527  1327 E ExoPlayerImplInternal:         at
 com.google.android.exoplayer2.upstream.DataSourceInputStream.checkOpened(DataSourceInputStream.java:102)
 03-25 15:50:43.398   527  1327 E ExoPlayerImplInternal:         at
 com.google.android.exoplayer2.upstream.DataSourceInputStream.open(DataSourceInputStream.java:65)
 03-25 15:50:43.398   527  1327 E ExoPlayerImplInternal:         at
 com.google.android.exoplayer2.upstream.ParsingLoadable.load(ParsingLoadable.java:114)
 03-25 15:50:43.398   527  1327 E ExoPlayerImplInternal:         at
 com.google.android.exoplayer2.upstream.Loader$LoadTask.run(Loader.java:295)
 03-25 15:50:43.398   527  1327 E ExoPlayerImplInternal:         at
 java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113)
 03-25 15:50:43.398   527  1327 E ExoPlayerImplInternal:         at
 java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588)
 03-25 15:50:43.398   527  1327 E ExoPlayerImplInternal:         at
 java.lang.Thread.run(Thread.java:818)
 03-25 15:50:43.398   527  1327 E ExoPlayerImplInternal: Caused by:
 java.io.IOException
 03-25 15:50:43.398   527  1327 E ExoPlayerImplInternal:         at
 com.google.android.exoplayer2.upstream.DefaultHttpDataSource.makeConnection(DefaultHttpDataSource.java:400)
 03-25 15:50:43.398   527  1327 E ExoPlayerImplInternal:         at
 com.google.android.exoplayer2.upstream.DefaultHttpDataSource.makeConnection(DefaultHttpDataSource.java:361)
 03-25 15:50:43.398   527  1327 E ExoPlayerImplInternal:         at
 com.google.android.exoplayer2.upstream.DefaultHttpDataSource.open(DefaultHttpDataSource.java:195)
 03-25 15:50:43.398   527  1327 E ExoPlayerImplInternal:         ... 8 more
 }}}

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/29859#comment:4>
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