Hi Jonathan,
Just to clarify, where in RFC2327 does it mention that FQDN is not allowed
in the c-line? Because looking at RFC2327 pp.12-13 (under "Connection
Data"):
"If a unicast data stream is to pass through a network address
translator, the use of a fully-qualified domain name rather than an
unicast IP address is RECOMMENDED."
Is there a special condition somewhere (or some other RFCs) that I missed?
Thanks,
Jerry
> -----Original Message-----
> From: Jonathan Rosenberg [mailto:[EMAIL PROTECTED]]
> Sent: Monday, December 31, 2001 8:53 AM
> To: Aliza Nagauker
> Cc: '[EMAIL PROTECTED]'
> Subject: Re: [Sip-implementors] SIP and SDP
>
>
>
>
> Aliza Nagauker wrote:
>
> > Hello,
> >
> > I have question regarding SDP information in SIP messages:
> >
> > 1. Is it common in sip implementations to set SDP
> connection parameter
> > (c=)
> > with fully
> > qualified domain name (FQDN) instead of IP4 address?
>
>
> No, since it is not allowed according to rfc2327.
>
>
> > 2. Does a proxy server opens the SDP section of the message
> or does it
> > just
> > passes it on in the messages to the next proxy/sip terminal? Will it
> > forward
> > the SDP with a resolved connection address?
>
>
> Proxies are supposed to ignore the body.
>
>
> > 3. If a destination sip terminal gets message with SDP connection
> > address
> > which is FQDN how does it resolves this address? Is it
> common that a SIP
> > terminal refers to the DNS by itself? or maybe it asks it's proxy to
> > resolve
> > the address? How is it done?
> > thanks for your help
>
>
> As I mentioned above, IPv4 or v6 addresses, not domain names,
> are used
> in the SDP.
>
> -Jonathan R.
>
>
>
> --
> 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
>
_______________________________________________
Sip-implementors mailing list
[EMAIL PROTECTED]
http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
