all,
In REGISTER request, UA puts '+sip.instance' param in the contact
header.
Isn't it mandatory for Registrar to keep the parameter while sending 200 ok
?
Pl find the related content from RFC5627.
5.2. Generating a REGISTER Response
When generating the 200 (OK) response to the REGISTER request, the
procedures of step 8 of Section 10.3 of RFC 3261 [1] are followed.
Furthermore, for each Contact header field value placed in the
response, if the registrar has stored an instance ID associated with
that contact, that instance ID is returned as a Contact header field
parameter.
The actual problem is that openIms server returns the public gruu value
in 2xx of Register
but without '+sip.instance' parameter.
Is this ok to proceed processing the GRUU parameters?
Best Regards,
Mohammed Hanifa
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