Hello,

On 05.09.24 13:10, nizam--- via sr-users wrote:

Dear experts,

Would appreciate if anyone can explain why in the given sample Lua script the 'Handle Retransmission' block checks the return code of t_check_trans (if KSR.tm.t_check_trans == 0 then), but in the Kamailio native config standard file if just calls the t_check_trans() function without checking the return code. What is the intention here and how does it work? Thank you in advance.

Handle retransmission script from native config file: if (!is_method("ACK")) { if(t_precheck_trans()) { t_check_trans(); exit; } t_check_trans(); }

Handle retransmission from sample Lua script: if not KSR.is_ACK() then if KSR.tmx.t_precheck_trans() > 0 then KSR.tm.t_check_trans(); return 1; end

            if KSR.tm.t_check_trans() == 0 then
                    return 1;
            end
    end

See for more details:

- https://www.kamailio.org/wikidocs/tutorials/faq/main/#how-is-the-function-re...

Cheers, Daniel