Please note that bis-05 is clear that the client has to be a member of the multicast group it sent the request on.
-Jonathan R. Pekka Pessi wrote: > In message <[EMAIL PROTECTED]> Lei Liang > <[EMAIL PROTECTED]> writes: > >> I see in rfc2543 that servers and UACs may send request via >> multcast address and when the next downstream hop response this >> request, it will send it back via the multicast address derived >> from the via headers of the request. but how could the upstream >> hop receive the response if it's not a member of this multicast >> group? >> > > The section 10.46.1 in bis04 states that client MAY insert a maddr > parameter with unicast address to the Via header. If client does > not belong to the group it sent the request, it just inserts its > own unicast address to the Via header and then sits and waits for > a whole bunch of 100 Trying messages to arrive. > > Pekka > > _______________________________________________ Sip-implementors > mailing list [EMAIL PROTECTED] http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors > > -- Jonathan D. Rosenberg, Ph.D. 72 Eagle Rock Avenue Chief Scientist First Floor dynamicsoft East Hanover, NJ 07936 [EMAIL PROTECTED] FAX: (973) 952-5050 http://www.jdrosen.net PH: (973) 952-5000 http://www.dynamicsoft.com _______________________________________________ Sip-implementors mailing list [EMAIL PROTECTED] http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
