[OpenSIPS-Users] Testing for dialog values

[Pete Kelly]

Hi Bogdan,

Thank you for that patch, it does indeed solve the problem. (I patched
against 1.6 branch)

Out of interest, can you tell me how opensips evaluates the following
if statement:

if($dlg_val(name) != NULL && $dlg_val(name) == 'value')

I would expect it to stop evaluating if "$dlg_val(name) != NULL" did
not return true, but I*think* from my experimentation that it
continues to evaluate "$dlg_val(name) == 'value'"


On 18 August 2010 15:51, Bogdan-Andrei Iancu <bogdan at voice-system.ro> wrote:
> Hi Pete,
>
> Could you try the attached patch to see if it solves the problem ?
>
> IF ok, I will upload it on SVN
>
> Regards,
> Bogdan
>
> Pete Kelly wrote:
>>
>> Hi
>>
>> I am currently storing some dialog values in opensips 1.6.3, using the
>> following format:
>>
>> $dlg_val(name) = "value";
>>
>> I then retrieve the value in the same way:
>>
>> if($dlg_val(name) == "value") { // do some stuff }
>>
>> However, if the dialog no longer exists on a subsequent request (BYE
>> for example), the read part produces some errors in the opensips log
>> like this:
>>
>> CRITICAL:core:comp_scriptvar: cannot get left var value
>> WARNING:core:do_action: error in expression (l=542)
>>
>> Does anyone know how I can test for the existence of the variable
>> before trying to access it? I have tried
>>
>> if($dlg_val(name) != NULL && $dlg_val(name) == "value") { // do some stuff
>> }
>>
>> but this produces the same effect.
>>
>> Thanks
>> Pete
>>
>> _______________________________________________
>> Users mailing list
>> Users at lists.opensips.org
>> http://lists.opensips.org/cgi-bin/mailman/listinfo/users
>>
>>
>
>
> --
> Bogdan-Andrei Iancu
> OpenSIPS Bootcamp
> 20 - 24 September 2010, Frankfurt, Germany
> www.voice-system.ro
>
>