Nope. Just some headers may appear multiple times. Have a look at
Section 7.3 of RFC3261 where the BNF pattern for those headers that
can occur multiple times (as comma separated list or as multiple
headers) is described. Use this pattern when consulting the ABNF.
http://tools.ietf.org/html/rfc32
Hi Sungwoo
In terms of ABNF in RFC 3261, headers can appear any number of times.
However, in practice, it only makes sense for some headers to appear multiple
times (e.g. Route, Record-Route, Contact).
AFAIK, multiple To, From headers in a SIP message have no use (not at the
moment atleast)
Re
There are a number of headers that may only appear once, including From,
To, CSeq. IIRC this is addressed in the text relevant to each one.
Thanks,
Paul
On 11/9/2010 1:27 PM, SungWoo Lee wrote:
> Dear,
>
> Does 3261 specify the number of a certain header in a SIP message? We know
Dear,
Does 3261 specify the number of a certain header in a SIP message? We know that
multiple Via or Route headers are possible in a message. But what about From
header or To header? It obviously sounds weird, but can we put two identical
From headers(with same tag) in a single SIP invite requ
2010/11/9 Daniel-Constantin Mierla :
>>> In other words, may I think, generally, SIP proxy supports auth-int of
>>> proxy authenticate?
>>
>> No idea. but at less Kamailio/SER/OpenSIPS supports it.
>
> are you sure about all of them? In kamailio we have it with latest version,
> 3.1.0, inherited fr
On 11/8/10 11:56 PM, Iñaki Baz Castillo wrote:
> 2010/11/8 Couret Tabt:
>> I just mean UAS(i.e.SIP proxy).
> A SIP proxy is not a UAS, it's a proxy :)
> A registrar server is a UAS.
>
>
>> In other words, may I think, generally, SIP proxy supports auth-int of proxy
>> authenticate?
> No idea. bu
2010/11/8 Couret Tabt :
> I just mean UAS(i.e.SIP proxy).
A SIP proxy is not a UAS, it's a proxy :)
A registrar server is a UAS.
> In other words, may I think, generally, SIP proxy supports auth-int of proxy
> authenticate?
No idea. but at less Kamailio/SER/OpenSIPS supports it.
--
Iñaki B
>
> Opss, I should mean just SIP UA's :)
>
I just mean UAS(i.e.SIP proxy).
In other words,
may I think, generally, SIP proxy supports auth-int of proxy authenticate?
Kinds,
Tabt.
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2010/11/7 Daniel-Constantin Mierla :
> In terms of SIP servers, Kamailio 3.1 as well as SIP Express Rotuer
> (SER) can authenticate with auth-int:
>
> http://kamailio.org/docs/modules/stable/modules/auth.html#www_challenge
Opss, I should mean just SIP UA's :)
--
Iñaki Baz Castillo
___
An UPDATE is an UPDATE. The effect is strictly a function of its
content. And as already mentioned, every UPDATE either refreshes the
session timer, or disables it, regardless of what else it does.
I suppose you might consider that an UPDATE that does nothing else must
have been intended only t
Hi Priya ,
Session timer is restarted for each update request.
Regards,
Sumit Jindal
On Mon, Nov 8, 2010 at 10:48 AM, Tarun2 Gupta wrote:
>
> Hi Priya
>
> IMO, the version number in the 'o' line of SDP can be used to determine
> whether the SDP is a new offer or a session refresh request.
>
>
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