This is continuation with limiting number of calls per Kamailio proxy server.

I modified kamailio.cfg as below.

 

1. loadmodule "dialog.so"

2. modparam("dialog", "enable_stats", 1)
3. modparam("dialog", "dlg_flag", 4)

Next, as dialog module I can use either active_dialogs() or $DLG_count to find number of calls present at any given point of time.

However if I use active_dialogs() I get parse error when I run kamailio proxy.

Next I used $DLG_count , but always I am getting value of $DLG_count as 0.

 

In route section, I added code as below.

 

        if (is_method("INVITE"))
        {
                if($DLG_count > 1)
                {
                        sl_send_reply("503","RESOURCE UNAVAILABLE");
                        exit;
                }
                else
                {
                        xlog("Dialog count = $DLG_count\n");
                }
        }

Everytime a new call starts , it prints $DLG_count as 0.

 

Kindly let me know whats going wrong here.

 

Regards

Austin