[FFmpeg-devel] [PATCH 2/2] avformat/hls: use AVIOContext new_http_request callback

[Aman Gupta]

On Fri, Dec 29, 2017 at 2:45 PM, Nicolas George <george at nsup.org> wrote:

> Aman Gupta (2017-12-29):
> > From: Aman Gupta <aman at tmm1.net>
> >
> > This fixes a segfault when streaming from an HLS playlist which uses
> > crypto, by ensuring ff_http_do_new_request will never be invoked on a
> > non-http URLContext.
> >
> > Additionally it simplifies the demuxer by removing http.h and all the
> > http specific code in open_url_keepalive.
>
> It it awfully specific for something quite minor. And it is messing with
> the public API, that requires careful design.
>

I understand the public API should not be changed lightly, but I believe
this approach is far
superior to the mess of http specific checks currently present all over
hls.c. It also makes it easier
in the future to add http keepalive support to other consumers like the
dash demuxer and the
crypto protocol.


>
> I suggest to have ff_http_do_new_request() check that its argument is
> really a HTTP context and return EINVAL or ENOSYS otherwise.
>

I'll go ahead and submit another patchset using this approach to fix the
immediate
segfault while we consider a larger API change.

Thanks,
Aman


>
> Regards,
>
> --
>   Nicolas George
>
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