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install:upgrade:4.0.x-to-4.1.0
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install:upgrade:4.0.x-to-4.1.0 [2013/11/04 12:15] miconda [MySQL - Updates to old database tables] |
install:upgrade:4.0.x-to-4.1.0 [2013/12/06 11:25] (current) miconda [Behaviour] |
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| ) ENGINE=InnoDB DEFAULT CHARSET=latin1; | ) ENGINE=InnoDB DEFAULT CHARSET=latin1; | ||
| + | INSERT INTO version (table_name, | ||
| + | CREATE TABLE rtpproxy ( | ||
| + | id INT(10) UNSIGNED AUTO_INCREMENT PRIMARY KEY NOT NULL, | ||
| + | setid VARCHAR(32) DEFAULT 00 NOT NULL, | ||
| + | url VARCHAR(64) DEFAULT '' | ||
| + | flags INT DEFAULT 0 NOT NULL, | ||
| + | weight INT DEFAULT 1 NOT NULL, | ||
| + | description VARCHAR(64) DEFAULT '' | ||
| + | ); | ||
| </ | </ | ||
| Line 134: | Line 143: | ||
| * **syn_branch** has been removed - core acts now always as syn_branch=0 - the Via header branch value is computed based on transaction attributes | * **syn_branch** has been removed - core acts now always as syn_branch=0 - the Via header branch value is computed based on transaction attributes | ||
| + | * **dns_naptr_ignore_rfc** has been added. Specifies if the Order field in a NAPTR record should be respected. Old code, and still default, is to ignore. | ||
| + | |||
| + | ==== Behaviour ==== | ||
| + | |||
| + | === Comparison with $null === | ||
| + | |||
| + | In short | ||
| + | * now: if($var(a)==$null) is always false | ||
| + | * previous: if($var(a)==$null) was true if $var(a) had the value 0 | ||
| + | |||
| + | **// | ||
| + | |||
| + | **$null** is a special variable that was meant to test if a variable is defined or not (exists or not). It was introduced during Kamailio 1.x series (OpenSER at that time). | ||
| + | |||
| + | For example: | ||
| + | |||
| + | <code c> | ||
| + | if($avp(x)==$null) | ||
| + | </ | ||
| + | |||
| + | Should return true if there was no value assigned to $avp(x). | ||
| + | |||
| + | However, some variables are defined always (eventually initialized to 0), such as $var(a) or $shv(b). | ||
| + | |||
| + | Starting with v3.0.0 when the core from Kamailio point of view was refactored, as part of integration with SER, the comparison with $null mistakenly became the same as comparison with integer 0 (zero). | ||
| + | |||
| + | Some of the comparisons kept working, but some gave wrong result: | ||
| + | |||
| + | <code c> | ||
| + | $avp(x)=0; | ||
| + | if($avp(x)==$null) | ||
| + | </ | ||
| + | |||
| + | was true, but actually $avp(x) was defined, having value 0. | ||
| + | |||
| + | Issue was reported on: | ||
| + | * https:// | ||
| + | |||
| + | |||
| + | **// | ||
| + | |||
| + | Don't compare $var(...) and $shv(...) with $null, they are always defined and initialized to 0. You can eventually compare them with 0 (instead of $null). | ||
| + | |||
| + | |||
install/upgrade/4.0.x-to-4.1.0.1383563731.txt.gz ยท Last modified: 2013/11/04 12:15 by miconda
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