Sarika,
I love this question, but I don't have an answer for you - just
some thoughts. It is legit to have a REGISTER request without a contact
field so says 3261, so I believe it. Section 10.2.3 Fetching Bindings
states:
"A success response to any REGISTER request contains the complete list
of existing bindings, regardless of whether the request contained a
Contact header field. If no Contact header field is present in a
REGISTER request, the list of bindings is left unchanged."
Now a Register request does not create a dialog, so it wont know
to explicitly return contacts for the UA so will it return all contacts ?
(that would be alot and probably a good method for a DoS attack !). I am
thinking it would be a successful final response with no contacts - 200 OK
but I am guessing. Help ?.
Regards, Wayne D.
>Hello
>I have a query on Contact header in REGISTER request and its 200 OK
>response.
>What would be behaviour of a Registrar in the following scenario:
>" UA sends a new REGISTER request without any Contact header"
>In this case, no address bindings are available with the Registrar
>Does the Registrar reject the request with an error response
>
>OR
>
>It sends a 200 OK without any Contacts, to indicate that no Contacts are
>available.
>
>Please let me know the expected behaviour.
>
>Regards
>Sarika
>
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