[FFmpeg-devel] [PATCH 2/2] avformat/whip: check the exchange sdp url is start with http

[Marvin Scholz]

On 9 Jun 2025, at 5:21, Jack Lau wrote:

>> On Jun 6, 2025, at 11:02, Steven Liu <lq at chinaffmpeg.org> wrote:
>>
>> Make sure the WHIP protocol performs the SDP offer/answer
>> exchange with the WebRTC peer over HTTP.
>>
>> Signed-off-by: Steven Liu <lq at chinaffmpeg.org>
>> ---
>> libavformat/whip.c | 8 ++++++++
>> 1 file changed, 8 insertions(+)
>>
>> diff --git a/libavformat/whip.c b/libavformat/whip.c
>> index ce06a66bc4..b78ad27858 100644
>> --- a/libavformat/whip.c
>> +++ b/libavformat/whip.c
>> @@ -732,10 +732,18 @@ static int exchange_sdp(AVFormatContext *s)
>>     URLContext *whip_uc = NULL;
>>     AVDictionary *opts = NULL;
>>     char *hex_data = NULL;
>> +    const char *proto_name = avio_find_protocol_name(s->url);
>>
>>     /* To prevent a crash during cleanup, always initialize it. */
>>     av_bprint_init(&bp, 1, MAX_SDP_SIZE);
>>
>> +    if (!av_strstart(proto_name, "http", NULL)) {
>> +        av_log(whip, AV_LOG_ERROR, "WHIP: Protocol %s is not supported by RTC, choose http, url is %s\n",
>> +            proto_name, s->url);
>> +        ret = AVERROR(EINVAL);
>> +        goto end;
>> +    }
>> +
>>     if (!whip->sdp_offer || !strlen(whip->sdp_offer)) {
>>         av_log(whip, AV_LOG_ERROR, "WHIP: No offer to exchange\n");
>>         ret = AVERROR(EINVAL);
>> -- 
>> 2.39.3 (Apple Git-146)
>>
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>
> patchset LGTM
>
> Thanks
> Jack
>

Pushed as f8a9d9473b0af9e5769a669f5418361d6ac26ad8.

Thanks

>
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