No, you use the options tag with a sip.extensions media feature tag
ala RFC 3840 in order to get a retargeting proxy to send the request
only to the subset of UAS that support the extension.
--
Dean
On Nov 20, 2008, at 5:03 PM, DRAGE, Keith (Keith) wrote:
You fork OPTIONS requests?
Keith
-----Original Message-----
From: Christer Holmberg [mailto:[EMAIL PROTECTED]
Sent: Thursday, November 20, 2008 10:58 PM
To: DRAGE, Keith (Keith); Dean Willis; Paul Kyzivat
Cc: SIP List; Elwell, John
Subject: RE: [Sip] INFO Framework: Tags
Hi,
But what does an option tag in OPTIONS tell you over and above a 200
(OK) response to OPTIONS with a Recv-Info header.
Probably nothing.
But, it can still be used for the forking.
Regards,
Christer
-----Original Message-----
From: Christer Holmberg [mailto:[EMAIL PROTECTED]
Sent: Thursday, November 20, 2008 10:53 PM
To: DRAGE, Keith (Keith); Dean Willis; Paul Kyzivat
Cc: SIP List; Elwell, John
Subject: RE: [Sip] INFO Framework: Tags
Hi,
I still think we shall have an option tag for the extension itself.
Eventhough it does not gurantee that the UAS supports specific info
packages, at least you can use it to help finding a UAS
which supports
the extensions (by using the sip.extensions feature tag).
And, as Dean said, it can be used with OPTIONS.
Regards,
Christer
-----Original Message-----
From: DRAGE, Keith (Keith) [mailto:[EMAIL PROTECTED]
Sent: Friday, November 21, 2008 12:50 AM
To: Dean Willis; Paul Kyzivat
Cc: SIP List; Elwell, John; Christer Holmberg
Subject: RE: [Sip] INFO Framework: Tags
In which case you need an option tag for the info package itself.
Noone is precluding that.
regards
Keith
-----Original Message-----
From: Dean Willis [mailto:[EMAIL PROTECTED]
Sent: Thursday, November 20, 2008 10:47 PM
To: Paul Kyzivat
Cc: DRAGE, Keith (Keith); SIP List; Elwell, John;
Christer Holmberg
Subject: Re: [Sip] INFO Framework: Tags
On Nov 20, 2008, at 4:08 PM, Paul Kyzivat wrote:
Dean Willis wrote:
If I don't support info-packages, then I MIGHT support
old-info. If I
do, then I MIGHT understand an INFO (or the legacy set),
and I MIGHT
send you one (from the legacy set). But I'm very, very
unlikely to
understand any of the new CID-indirection-to-select-a- body,
multiple-body stuff, so don't send it!
Dean,
You don't need an option tag for this. After the invite, I
can't send
you an info package unless you have provided a Recv-Info for it.
Okay, I'm willing to believe that.
What if I have an application that really, really requires
info- packages, so I want the call to fail if you can't
handle them?
Would this arise, or would it always be preferable to
complete the
INVITE exchange, then tear the call down once I find out that you
don't?
--
Dean
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