[FFmpeg-trac] #8546(avformat:open): http_persistent not honored when encryption is enabled

[FFmpeg]

#8546: http_persistent not honored when encryption is enabled
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             Reporter:  vschweitzer  |                    Owner:  stevenliu
                 Type:  defect       |                   Status:  open
             Priority:  normal       |                Component:  avformat
              Version:  git-master   |               Resolution:
             Keywords:  http         |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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Comment (by stevenliu):

 Replying to [comment:4 vschweitzer]:
 > === Update ===
 >
 > As it turns out, my bisection method is sligtly faulty;
 > this changes nothing about the actual bug, but might
 > hinder the process of finding it.
 >
 > The behavior as seen with Torndado only appears on Windows
 > (probably due to differences in handling async operations).
 > Although this is still not expected behavior, this might
 > be caused by a different, (semi-)related issue.
 >
 > The actual bug described here (a tcp connection being
 > opened and closed for each file when encrypted, even
 > though http_persist is enabled) still appears and does
 > so even in FFmpeg version prior to `1965161`.
 > This can be observed the easiest by using wireshark,
 > showing only packets that involve the address or port
 > streamed to (when listening on localhost,
 > `tcp.port == 45000` works well, if the default port is
 > used). After each segment is pushed, a tcp packet with
 > FIN ACK flags set is sent, causing the connection to close.


 This should support in libavformat/crypto.c

 not only hlsenc but also hls.c have the same problem.
 so this should be fix at the crypto module.

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Ticket URL: <https://trac.ffmpeg.org/ticket/8546#comment:5>
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