Yes, it is part of the SIP specs. BTW, also HTTP works the same way. Sincerely, Giovanni Maruzzelli ========================================= Company : Celliax Website: www.celliax.org Address : via Pierlombardo 9, 20135 Milano Country/Territory : Italy Business Email: gmaruzz at celliax dot org Cell : 39-347-2665618 Fax : 39-02-87390039 On Tue, Dec 30, 2008 at 2:32 PM, peder@networkoblivion.com <peder@networkoblivion.com> wrote:
This is because the ua sends it's registration refresh unauthenticated. The registrar will then push back an authentication challenge request so the ua can prove its identity, at which point the ua then repeats the same transaction, but with authentication credentials attached.
Why does it do that? Every time I do a debug, I see the first request denied as unauthorized and then it always comes right back and gets registered ok. Is it part of the SIP spec to try unauthenticated first? I would think you could set something on the UA to cut out the extra traffic.
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