Re: [FFmpeg-devel] [PATCH v5 3/3] avformat/whip: fix typos

[Timo Rothenpieler <timo@rothenpieler.org>]

On 29.06.2025 05:14, Jack Lau wrote:
> 
> 
>> On Jun 29, 2025, at 11:11, Jack Lau <jacklau1222gm@gmail.com> wrote:
>>
>> Hi Timo,
>>> On Jun 29, 2025, at 06:49, Timo Rothenpieler <timo@rothenpieler.org> wrote:
>>>
>>> I've actually cleaned this up a bit while trying to implement DTLS via schannel, and effectively removed the whole section:
>>>
>>>> https://github.com/BtbN/FFmpeg/commit/b6794f1373fb07b791cfacd2189c7efc4d6bdbcc
>>>
>>> There's also a bunch of other necessary UDP related fixes in tls.c.
>>>
>>> Don't try to use an http proxy for UDP. It doesn't work:
>>>> https://github.com/BtbN/FFmpeg/commit/709ce9e5c48e3a27a400cf5af35038d3f0602c8a
>> I totally agree with the above two patches, it’s very reasonable
>>>
>>> Properly forward the various hosts and ports to udp.c so it actually works when using a non-external UDP connection:
>>>> https://github.com/BtbN/FFmpeg/commit/46375adf7d9cc61f709ab14dd2ea017995f735db
>> But I think this patch need a bit modify, I think the c->listen stands for FFmpeg if is server. When it is true, FFmpeg as server.
>> So maybe:
>>          if (c->listen) {
>>              av_dict_set_int(options, "localport", port, 0);
>>              av_dict_set(options, "localaddr", c->underlying_host, 0);Add commentMore actions
>>          } else {
>>              av_dict_set_int(options, "connect", 1, 0);
>>          }
> Sry for forgetting modify this code, the right code I want to express is that:
>          if (c->listen) {
>              av_dict_set_int(options, "connect", 1, 0);
>          } else {
>              av_dict_set_int(options, "localport", port, 0);
>              av_dict_set(options, "localaddr", c->underlying_host, 0);
>          }

It goes together with
> https://github.com/BtbN/FFmpeg/commit/6fc902eb75554e6ad91a2ddf4ce1d131feee6f55

Without setting the localport to 0 in client-mode in combination with 
above patch, it'll try to bind to the port passed in the URL, which when 
tryong to connect to a server on localhost will result in a bind 
failure, cause it tried to bind to the same port.

And "connect" in listen mode makes no sense to me?
There is no remote address, where would it "connect" the socket to?
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