[OpenSIPS-Devel] [NEW] exchanging info between dialogs

[Richard Revels]

Nevermind.  t_newtran() in the config block for re-invite lines up the dialog so the dialog flag I set is found.  Still can't seem to use get_dialog_info to find a dialog in that block but I don't need it anymore.

Richard

On Jun 12, 2010, at 7:40 PM, Richard Revels wrote:

> Sorry, wrong log entries for the call in the BYE block.
> 
> Jun 12 23:14:13 guinea-pig2 osips-log[15011]: DBG:dialog:check_dlg_value_unsafe: looking for <credit_user> with <9194395395>
> Jun 12 23:14:13 guinea-pig2 osips-log[15011]: DBG:dialog:check_dlg_value_unsafe: var found with val <9194395395>!
> Jun 12 23:14:13 guinea-pig2 osips-log[15011]: DBG:dialog:check_dlg_value_unsafe: var found!
> Jun 12 23:14:13 guinea-pig2 osips-log[15011]: DBG:dialog:get_dlg_by_val: ref dlg 0x2b0a65ce0d78 with 1 -> 2
> Jun 12 23:14:13 guinea-pig2 osips-log[15011]: DBG:dialog:w_get_dlg_info: dialog found, fetching variable
> 
> 
> Richard
> 
> 
> On Jun 12, 2010, at 7:30 PM, Richard Revels wrote:
> 
>> I'm having a bit of a problem with this functionality and re-invites.  The call comes in, a dialog is created, a dialog flag is set, and a couple of values are stored in the dialog.  When the called party re-invites I want to look at those values so started trying with checking the dialog flag.  That came up empty so I decided that Opensips was thinking of this as a new dialog (hmm).  No big deal, I would use get_dialog_info.
>> 
>> The if block around get_dialog_info never triggers and the debug log indicates the dialog is not found.
>> 
>> Jun 12 22:40:38 guinea-pig2 osips-log[14664]: DBG:dialog:get_dlg_by_val: dlg in state 4 to check
>> Jun 12 22:40:38 guinea-pig2 osips-log[14664]: DBG:dialog:w_get_dlg_info: no dialog found
>> 
>> Since the dialog flag check works just fine in the BYE block, I decided to try the get_dialog_info there as well even though the current dialog would also be the one I was searching for.  It worked just fine using the same logic and values I am sending in from the re-invite block.
>> 
>> Jun 12 23:14:13 guinea-pig2 osips-log[15011]: DBG:dialog:fetch_dlg_value: looking for <credit_user>
>> Jun 12 23:14:13 guinea-pig2 osips-log[15011]: DBG:dialog:fetch_dlg_value: var found-> <9194395395>!
>> 
>> Richard
>> 
>> 
>> On Apr 28, 2010, at 11:46 AM, Bogdan-Andrei Iancu wrote:
>> 
>>> Hi,
>>> 
>>> just added to the dialog module a new function that allow you to 
>>> exchange data between dialogs - mainly to extract data from a different 
>>> ongoing dialog.
>>> 
>>> Such functionality is vital in complex scenarios (PBX related) like 
>>> attended call transfer - in such cases you may want to route a new call 
>>> based on information of existing dialogs.
>>> 
>>> Real case example:
>>> 
>>>  OpenSIPS is doing dispatching over a set of Asterisk boxes (which 
>>> act as SIP servers).
>>>  A calls B and the call is established (by dispatching from OpenSIPS) 
>>> via A1 Asterisk server
>>>  A wants to transfer B to a new party C, so A makes a new call to C 
>>> -> this call must end on A1 also, without going via dispatcher in openSIPS.
>>>  So, when A calls C, OpenSIPS will check if A has an already existing 
>>> call and if so, it will send the new call to the same Asterisk box as 
>>> the existing call.
>>> 
>>> In such a case, for each call, you need to attached to the call (as 
>>> dialog variables) the callee, caller and the Asterisk box . When a new 
>>> call is coming, you check if the new caller is already involved in a 
>>> call and if so, fetch the value of the proxy in order to send to the 
>>> same box.
>>> 
>>> For more about the technical details of the function, see
>>>     http://www.opensips.org/html/docs/modules/devel/dialog.html#id272137
>>> 
>>> Regards,
>>> Bogdan
>>> 
>>> -- 
>>> Bogdan-Andrei Iancu
>>> www.voice-system.ro
>>> 
>>> 
>>> _______________________________________________
>>> Devel mailing list
>>> Devel at lists.opensips.org
>>> http://lists.opensips.org/cgi-bin/mailman/listinfo/devel
>> 
>