[SR-Users] Is there any globle variable/flag mechanism inKamailio
Alex Balashov
abalashov at evaristesys.com
Wed Apr 13 18:02:33 CEST 2011
Derrick,
If it's truly global variables you want, have you tried shared memory variables or htable?
--
Alex Balashov - Principal
Evariste Systems LLC
260 Peachtree Street NW
Suite 2200
Atlanta, GA 30303
Tel: +1-678-954-0670
Fax: +1-404-961-1892
Web: http://www.evaristesys.com/
On Apr 13, 2011, at 11:58 AM, "Derrick Ding" <dding at aastra.com> wrote:
> Hi, Alex
>
> I tried, it doesn't work.
> The real proxy is like a SIP-UA stateful entity. When A call B, then
> call C. it's different dialog. My aim is to let Kamailio send back 491
> to A, if A&B is in sendrecv state and A send INVITE to C with sendrecv
> before A hold B.
>
> I cannot keep the state of A&B when process A&C. And record-route
> doesn't work either. It only works in a dialog.
>
> I hope Kamailio could add global variable for user to define and use.
>
> Sincerely,
> Derrick
>
> -----Original Message-----
> From: sr-users-bounces at lists.sip-router.org
> [mailto:sr-users-bounces at lists.sip-router.org] On Behalf Of Alex
> Balashov
> Sent: Tuesday, April 12, 2011 2:00 PM
> To: sr-users at lists.sip-router.org
> Subject: Re: [SR-Users] Is there any globle variable/flag mechanism
> inKamailio
>
> On 04/12/2011 01:54 PM, Derrick Ding wrote:
>
>> I wonder if there's any other mechanism that I can use to record the
>> state and can be used as flag.
>
> That is because a stateful proxy is, by default, transaction-stateful.
> A "call" is a dialog, which consists of several transactions. Proxies
> are not, by default, dialog-stateful. It sounds like you're looking for
>
> something that can persist throughout the lifetime of a dialog.
>
> Fortunately, Kamailio does have a 'dialog' module that adds this
> functionality. The doc page for the module is here:
>
> http://www.kamailio.org/docs/modules/3.1.x/modules_k/dialog.html
>
> If you set a dialog to be tracked using the 'dialog' module, you can use
>
> so-called dialog flags:
>
>
> http://www.kamailio.org/docs/modules/3.1.x/modules_k/dialog.html#id29657
> 48
>
>
> http://www.kamailio.org/docs/modules/3.1.x/modules_k/dialog.html#id29658
> 08
>
> These will be valid for the life of a dialog.
>
> Another option--which also has the effect of being dialog-persistent,
> but does not involve use of the dialog module--is to stow something in a
>
> Record-Route header value, which I assume your proxy is adding:
>
>
> http://www.kamailio.org/docs/modules/3.1.x/modules_k/rr.html#id2663290
>
> http://www.kamailio.org/docs/modules/3.1.x/modules_k/rr.html#check-route
> -param-id
>
> -- Alex
>
> --
> Alex Balashov - Principal
> Evariste Systems LLC
> 260 Peachtree Street NW
> Suite 2200
> Atlanta, GA 30303
> Tel: +1-678-954-0670
> Fax: +1-404-961-1892
> Web: http://www.evaristesys.com/
>
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