[FFmpeg-trac] #7052(avformat:new): rtmp_write dead loop

[FFmpeg]

#7052: rtmp_write dead loop
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             Reporter:  palich2000   |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  important    |                Component:  avformat
              Version:  git-master   |               Resolution:
             Keywords:  rtmp         |               Blocked By:
  deadlock                           |  Reproduced by developer:  0
             Blocking:               |
Analyzed by developer:  0            |
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Comment (by wingrime):

 Have same defect, digging in code gives clear suspect

 https://github.com/FFmpeg/FFmpeg/commit/858db4b01fa2b55ee55056c033054ca54ac9b0fd
 #diff-402ee51614912c70237d99b3fe73cb27

 With this commit, retry_transfer_wrapper don't consider 0 as EOS signal,
 commit change this behaviour in some parts of code but not in librtmp.


 So retry_transfer_wrapper do endless retry and there we have dead loop

 Reverting first diff from commit fixed issue for me, but brokes something
 else. Clear fix requires librtmp wrapper that change 0 to EOS. Other
 option - change librtmp

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Ticket URL: <https://trac.ffmpeg.org/ticket/7052#comment:3>
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