Hi, If I understood your question properly,
You can get the remote IP address from the SDP present in INVITE/200 OK/ACK. It is the 'c=' line by default applies to all media streams present in the session. 'c=' line can be present either in session level or media level, then media level takes precedence. If you have obtained domain address, instead of IP address, use DNS service to resolve the domain name and obtain IP addresss. 1. You can use system provided APIs to resolve domain address to IP. Or If you have your own implementation of DNS, resolve for 'A' records. Hope this answers. Regards -Venu On Tue, Feb 12, 2013 at 9:14 PM, Joel Gerber <[email protected]>wrote: > I should also make mention that in order to re-create the complete RTP > flow you'll need to combine the offering and answering SDP information. > > For example: The IP address and UDP port specified in the offering SDP > combined with the IP address and UDP port specified in the answering SDP > both form the complete RTP flow for a specific call. If you neglect the UDP > port information you could potentially be looking at a completely different > RTP flow than the one intended. > > Joel Gerber > Network Specialist > Network Operations > Eastlink > E: [email protected] T: 519.786.1241 > > > -----Original Message----- > From: [email protected] [mailto: > [email protected]] On Behalf Of Joel Gerber > Sent: February-12-13 10:42 AM > To: [email protected] > Subject: Re: [Sip-implementors] where to retrieve IP adress for RTP flow > > Hello Ikuzar; > > You can obtain this from the SDP body from either the offering entity > (usually INVITE message), or the answering entity (usually located within > the 200 OK message.) > > Notice how I use the words usually, as there are circumstances where the > offering and answering SDP information can be located in different > messages, or even modified partway through a dialog (phone call.) > > RFC 6337, 3264 and 4566 can provide a lot more information on this. > > Joel Gerber > Network Specialist > Network Operations > Eastlink > E: [email protected] T: 519.786.1241 > > -----Original Message----- > From: [email protected] [mailto: > [email protected]] On Behalf Of ikuzar RABE > Sent: February-12-13 10:39 AM > To: [email protected] > Subject: [Sip-implementors] where to retrieve IP adress for RTP flow > > Hello, > > * > * > I'd like to know how can I retrieve IP address for RTP flow from SIP > message ? > I can obtain IP address in Contact field, but it may be also a domain name > instead of IP address... > > Thanks for your help. > > ikuzar > _______________________________________________ > Sip-implementors mailing list > [email protected] > https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors > > _______________________________________________ > Sip-implementors mailing list > [email protected] > https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors > > _______________________________________________ > Sip-implementors mailing list > [email protected] > https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors > -- With Regards Venu 93484 89945 [email protected] _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
