[Kamailio-Users] Comparing AVPs to user variables

Alex Balashov abalashov at evaristesys.com
Tue Sep 22 21:37:58 CEST 2009


The $avp(s:call_limit) came from a numerical database field, but was 
returned by a Perl script (via the Perl module), perhaps as a string, 
not sure.

catalina oancea wrote:

> How did your vars get their values? This problem happened to me once
> when I got string values instead of integers from mysql.
> The comparison was made as if the values were strings not integers.
> 
> 
> 2009/9/22 Daniel-Constantin Mierla <miconda at gmail.com>:
>> Hello,
>>
>> On 22.09.2009 18:43 Uhr, Alex Balashov wrote:
>>> Is there a known bug in Kamailio 1.4.1 that causes comparisons like this
>>> to be inaccurate?
>> not remember right now, could you try with the last in that branch? If still
>> there, should be fixed - 1.4.x is still maintained for such bugs, which is
>> pretty strange considering that comparing such variables is done very often
>> in my configs.
>>
>> Cheers,
>> Daniel
>>
>>
>>>   get_profile_size("people", "$avp(s:person_id)", "$var(u_call_count)");
>>>
>>>   ...
>>>
>>>   if($var(u_call_count) >= $avp(s:call_limit))
>>>
>>> In this case, $var(u_call_count) was 3 and $avp(s:call_limit) was 26 - I
>>> printed both values beforehand.  Yet, the comparison was evaluated as true.
>>>
>>> I worked around the problem by storing the profile size in an AVP as well
>>> and comparing them instead, and it seems to have solved the problem:
>>>
>>>   if($avp(s:u_call_count) >= $avp(s:call_limit))
>>>
>>> However, I was wondering if this is a known problem in 1.4.1 and possibly
>>> 1.4.x.
>>>
>>> Thanks!
>>>
>> --
>> Daniel-Constantin Mierla
>> * http://www.asipto.com/
>>
>>
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>>


-- 
Alex Balashov - Principal
Evariste Systems
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