Hello,
I have found 2 sentences that seems contradictories in RFC 2337 and in RFC 3264 regarding the use of the IP address and port in the SDP offer.
Is this really a contradiction or not?
Based on RFC 3264, the IP address/source indicated by the offerer are the ones to be used to "receive" media. Especifically it says later "For recvonly and sendrecv streams, the port number and address in the offer indicate where the offerer would like **to receive** the media stream. For sendonly RTP streams, the address and port number indirectly indicate where the offerer wants to receive RTCP reports. Unless there is an explicit indication otherwise, reports are sent to the port number one higher than the number indicated. The IP address and port present in the offer indicate nothing about the source IP address and source port of RTP and RTCP packets that will be sent by the offerer".
Currently in RFC2327 (and updated SDP draft draft-ietf-mmusic-sdp-new-24.txt) says that
"For an IP unicast session, the following are conveyed:
o The remote address for media
o The remote transport port for media
The semantics of this address and port depend on the media and transport protocol defined. By default, this is the remote address and remote port to which data **is sent**, and the remote address and remote (it is local in RFC2327) port on which to receive data. "
Thanks for any view on this issue
Javier Gonzalez
UMTS Product Planning & Standards
' +44.(0)1628 434123. (ESN 560 4123)
mailto:ggfj at nortel.com
Nortel
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