[SIP Beyond VoIP] Another case where Sylk would reject Notifications

Saúl Ibarra Corretgé saul at ag-projects.com
Thu Nov 15 17:43:43 CET 2012

On Nov 15, 2012, at 5:16 PM, Adrian Georgescu wrote:

> Is this a general PJSIP issue?
> Adrian
> On Nov 15, 2012, at 5:15 PM, Iñaki Baz Castillo wrote:
>> 2012/11/15 Adrian Georgescu <ag at ag-projects.com>:
>>> You should put IPs in the Via headers, and not hostnames that need to be
>>> looked-up within a dialog.
>> Hi, Via headers must never be inspected within a dialog. The only case
>> in which a Via header must be inspected (according to fantasizing
>> rules in RFC 3261) is when a server or proxy must send a UDP reply and
>> it fails to send it to the source address of the request.

It's not about the Via, it's the Record-Route header that was sent in the first SUBSCRIBE the one that creates trouble. It's not a PJSIP problem, it has to do with how we use PJSIP to avoid blocking on the DNS resolution.

Saúl Ibarra Corretgé
AG Projects

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