> Can there be an offer with as follows.
>
> v=0
> o=abc 940493389 1 IN IP4 10.10.10.10
> s=-
> c=IN IP4 10.10.10.10
> t=0 0
> m=audio 0 RTP/AVP
>
> Here m line does not have any payload
> format <fmt>. Is this a validoffer?
No. It does not comply with RFC 4566 ABNF.
media-field = %x6d "=" media SP port ["/" integer]
SP proto 1*(SP fmt) CRLF
> what is the use case of this offer?
Torture test.
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