   if (is_method("INVITE")) {
                 if (!has_totag()) {
                        get_profile_size("caller", "$fu", "$var(SIZE)");
                        if( $var(SIZE) >= MAX_NUMBER_OF_CALLS ) {
                                sl_send_reply("503", "Simultaneous calls limit reached");
                                xlog("Rejected calls with 503 Simultaneous calls limit reached\n");
                                exit;
                        }
                        else {
                                 xlog("Max calls limit not reached yet\n");
                        }
                }
        }
        set_dlg_profile("caller","$fu");

0(4925) CRITICAL: dialog [dialog.c:297]: profile <caller> not definited
0(4925) ERROR: <core> [route.c:1161]: fixing failed (code=-6) at cfg:/usr/local/etc/kamailio/kamailio.cfg:423
0(4925) ERROR: <core> [route.c:1161]: fixing failed (code=-6) at cfg:/usr/local/etc/kamailio/kamailio.cfg:433
0(4925) ERROR: <core> [route.c:1161]: fixing failed (code=-6) at cfg:/usr/local/etc/kamailio/kamailio.cfg:434
ERROR: error -6 while trying to fix configuration

On Sat, Oct 29, 2011 at 8:27 AM, Austin Einter <austin.einter@gmail.com> wrote:

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