[FFmpeg-devel] FFmpeg UDP multicast support broken on OpenBSD

[Brad Smith]

On 11/12/2021 4:01 PM, Marton Balint wrote:

>
>
> On Fri, 12 Nov 2021, Brad Smith wrote:
>
>> Hi,
>>
>> I am looking for some feedback regarding a ticket I opened for UDP 
>> multicast support
>> currently being broken on OpenBSD.
>>
>> https://trac.ffmpeg.org/ticket/9449
>
> Well, send the patch to the list. I believe it is platform dependant 
> which type should be used, so using unsigned char unconditionally is 
> probably not OK, especially for IPV6_MULTICAST_HOPS which is int even 
> on OpenBSD?

FreeBSD, NetBSD, OpenBSD, DragonFlyBSD, macOS, Solaris, AIX, IRIX, 
HP-UX, QNX, Minix3 and a few
others define the ttl parameter to IP_MULTICAST_TTL as an unsigned char. 
Linux has it as an integer.

The IPV6_MULTICAST_HOPS part is not correct in that example diff. That 
wasn't by me. I pointed out
out the issue to the person who made the original quick diff.

> Marton
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