Presence and IntComm WG

[Xiaotao Wu <>]

On Thu, 15 Apr 2004 

 wrote:

> Hi all .
> I have some questions about sipc.
> 1. Whether sipc supports a incoming request( i.e INVITE) without SDP?
> In rfc 3261, it allows an offer in 200 OK and answer in ACK.

Yes, it allows that. But I had not tested it for a long time because in
most case, offer is in INVITE.

>
> 2. When an incoming INIVITE's SDP indicates  a multicast media,
> maybe like this:
>  "m=audio 31616 RTP/AVP 0
>   c=IN IP4 239.255.233.245/15"
> sipc generates an successful reponse including such part:
>  "c=IN IP4 10.10.136.128
>  t=0 0
>  m=audio 31616 RTP/AVP 0"
>  I want to know whether "c=IN IP4 10.10.136.128" is correct , why sipc 
> doesn't use  the multicast address ,i.e "c=IN IP4 239.255.233.245/15" .

no it's not correct. no multicast support in sipc for now.

-Xiaotao

>
> Thanks for your help.
>
>
>