Hi,
I'm continue my job to 'migrate' my 3.3.1 kamailio.cfg script on a RHEL 6.2 server to the 5.0.x kamailio version on a RHEL 7.1 server, and I encounter a major problem with the '== $null' test in the script.
My original script (3.3.1) contains this sequence :
$var(i:rangeInx)=0; $var(i:maxRangeInx) = $sht(mbxrangeHash=>"maxrange"); xlog(" imbxRangeInx value before test : '$var(i:maxRangeInx)' "); if ($var(i:maxRangeInx)==$null) { $var(i:maxRangeInx)=99; } xlog(" imbxRangeInx after test : '$var(i:maxRangeInx)' ");
==> The results are : imbxRangeInx value before test : '0' imbxRangeInx value after test : '99'
I run the same script on my new server and I get '0' before and after the test.
I attempted another kind of test to try to figure out where the problem is. So I write the simple test (with kamailio 5.0.x) :
$var(i:rangeInx)=0; $var(i:maxRangeInx) = $sht(mbxrangeHash=>"maxrange"); $var(toto) = $null; if ($var(toto) == $null) xlog ("toto true"); else xlog ("toto false");
The result I got is always 'toto false'.
So it appears to me that the test '== $null' doens' that gives a good result with kamailio 3.3.1, doesn't return the same with kamailio 5.0.x.
That is a major issue for me and it let me confused about the possibility to move to kamailio 5.0.x.
Have people an idea / explanation, why this issue ?
Cordialement Patrick GINHOUX
Hello,
$var(...) don't hold null values, they start initialed to 0 and they are reset to 0 (when assigning $null to them) -- this is the design from the beginning which brings benefits in many situation when one doesn't get a chance to init.
If you want a similar variable that works with null, then use $vn(...):
- https://www.kamailio.org/wiki/cookbooks/5.0.x/pseudovariables#vn_name_-_priv...
Cheers, Daniel
On 27/03/2017 15:22, Ginhoux, Patrick wrote:
Hi,
I’m continue my job to ‘migrate’ my 3.3.1 kamailio.cfg script on a RHEL 6.2 server to the 5.0.x kamailio version on a RHEL 7.1 server, and I encounter a major problem with the ‘== $null’ test in the script.
My original script (3.3.1) contains this sequence :
$var(i:rangeInx)=0; $var(i:maxRangeInx) = $sht(mbxrangeHash=>"maxrange"); xlog(" imbxRangeInx value before test : '$var(i:maxRangeInx)' "); if ($var(i:maxRangeInx)==$null) { $var(i:maxRangeInx)=99; } xlog(" imbxRangeInx after test : '$var(i:maxRangeInx)' ");èThe results are :
imbxRangeInx value before test : ‘0’
imbxRangeInx value after test : ‘99’
I run the same script on my new server and I get ‘0’ before and after the test.
I attempted another kind of test to try to figure out where the problem is. So I write the simple test (with kamailio 5.0.x) :
$var(i:rangeInx)=0; $var(i:maxRangeInx) = $sht(mbxrangeHash=>"maxrange"); $var(toto) = $null; if ($var(toto) == $null) xlog ("toto true"); else xlog ("toto false");The result I got is always ‘toto false’.
So it appears to me that the test ‘== $null’ doens’ that gives a good result with kamailio 3.3.1, doesn’t return the same with kamailio 5.0.x.
That is a major issue for me and it let me confused about the possibility to move to kamailio 5.0.x.
Have people an idea / explanation, why this issue ?
Cordialement
Patrick GINHOUX
SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list sr-users@lists.sip-router.org http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
Hi,
Great thanks to answer so quickly.
I tested the $vn ….in the 5.0.x script instead of $var…., and the results look good.
So I have to review the entire script to change all the ‘$var…. == $null’ entries to ‘$vn…. == $null’. I assume I have to do the same for the ‘!= $null” case. Am I correct ?
Now regarding my old kamailio 3.3.1 script, I notice that the ‘$var…. == $null’ works fine but no more with kamailio 5.0.x . So It’s something that has changed more recently. The 3.3.1 cookbooks doesn’t reference a ‘$vn’ variable. But may be I misread it.
So if you have comments on this for my understanding, that would be fine.
Cordialement Patrick GINHOUX
De : sr-users [mailto:sr-users-bounces@lists.sip-router.org] De la part de Daniel-Constantin Mierla Envoyé : lundi 27 mars 2017 15:31 À : Kamailio (SER) - Users Mailing List sr-users@lists.sip-router.org Objet : Re: [SR-Users] Important problem with this test : if ($var(i:maxRangeInx)==$null)
Hello,
$var(...) don't hold null values, they start initialed to 0 and they are reset to 0 (when assigning $null to them) -- this is the design from the beginning which brings benefits in many situation when one doesn't get a chance to init.
If you want a similar variable that works with null, then use $vn(...):
- https://www.kamailio.org/wiki/cookbooks/5.0.x/pseudovariables#vn_name_-_priv...
Cheers, Daniel
On 27/03/2017 15:22, Ginhoux, Patrick wrote: Hi,
I’m continue my job to ‘migrate’ my 3.3.1 kamailio.cfg script on a RHEL 6.2 server to the 5.0.x kamailio version on a RHEL 7.1 server, and I encounter a major problem with the ‘== $null’ test in the script.
My original script (3.3.1) contains this sequence :
$var(i:rangeInx)=0; $var(i:maxRangeInx) = $sht(mbxrangeHash=>"maxrange"); xlog(" imbxRangeInx value before test : '$var(i:maxRangeInx)' "); if ($var(i:maxRangeInx)==$null) { $var(i:maxRangeInx)=99; } xlog(" imbxRangeInx after test : '$var(i:maxRangeInx)' ");
==> The results are : imbxRangeInx value before test : ‘0’ imbxRangeInx value after test : ‘99’
I run the same script on my new server and I get ‘0’ before and after the test.
I attempted another kind of test to try to figure out where the problem is. So I write the simple test (with kamailio 5.0.x) :
$var(i:rangeInx)=0; $var(i:maxRangeInx) = $sht(mbxrangeHash=>"maxrange"); $var(toto) = $null; if ($var(toto) == $null) xlog ("toto true"); else xlog ("toto false");
The result I got is always ‘toto false’.
So it appears to me that the test ‘== $null’ doens’ that gives a good result with kamailio 3.3.1, doesn’t return the same with kamailio 5.0.x.
That is a major issue for me and it let me confused about the possibility to move to kamailio 5.0.x.
Have people an idea / explanation, why this issue ?
Cordialement Patrick GINHOUX
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Ginhoux, Patrick