use `RATE_LIMIT_CODE` for rate limits response

kamailio/rate-limiter-role.cfg

@@ -7,6 +7,7 @@ modparam("htable", "htable", "tpm=>size=8;initval=0;autoexpire=180")
 modparam("htable", "htable", "rate_limits=>initval=-1;autoexpire=60")     # initval = -1 means that record is expired and we need an update from DB
 
 #!trydef RATE_LIMIT_MESSAGE "Over rate Limit"
+#!trydef RATE_LIMIT_CODE "603"
 
 route[DOS_PREVENTION_REPLY] {
     setflag(FLAG_IS_REPLY);
@@ -217,12 +218,12 @@ route[DO_DOS_PREVENTION] {
 	# Personal checks for INVITE and REGISTER
     if ((is_method("INVITE") || is_method("REGISTER"))) {
         if ($sht(rps=>$var(rps)) > $var(lrps)) {
-            sl_send_reply("603", RATE_LIMIT_MESSAGE);
+            sl_send_reply(RATE_LIMIT_CODE, RATE_LIMIT_MESSAGE);
             xlog("L_INFO", "$ci|RL-$var(entity-type) log| Out of $rm $var(rps) rate limits: $sht(rps=>$var(rps)) > $var(lrps))");
             exit;
         }
         if ($sht(rpm=>$var(rpm)) > $var(lrpm)) {
-            sl_send_reply("603", RATE_LIMIT_MESSAGE);
+            sl_send_reply(RATE_LIMIT_CODE, RATE_LIMIT_MESSAGE);
             xlog("L_INFO", "$ci|RL-$var(entity-type) log| Out of $rm $var(rpm) rate limits: $sht(rpm=>$var(rpm)) > $var(lrpm))");
             exit;
         }
@@ -232,7 +233,7 @@ route[DO_DOS_PREVENTION] {
 #        if (isflagset(FLAG_IS_REPLY)) {
 #            xlog("L_INFO", "$ci|RL-$var(entity-type) log| Out of TOTAL($rm::$rs $rr) $var(tps) rate limits: $sht(tps=>$var(tps)) > $var(ltps))");
 #        } else {
-            sl_send_reply("603", RATE_LIMIT_MESSAGE);
+            sl_send_reply(RATE_LIMIT_CODE, RATE_LIMIT_MESSAGE);
             xlog("L_INFO", "$ci|RL-$var(entity-type) log| Out of TOTAL($rm) $var(tps) rate limits: $sht(tps=>$var(tps)) > $var(ltps))");
 #        }
         exit;
@@ -241,7 +242,7 @@ route[DO_DOS_PREVENTION] {
 #        if (isflagset(FLAG_IS_REPLY)) {
 #            xlog("L_INFO", "$ci|RL-$var(entity-type) log| Out of TOTAL($rm::$rs $rr) $var(tpm) rate limits: $sht(tpm=>$var(tpm)) > $var(ltpm))");
 #        } else {
-            sl_send_reply("603", RATE_LIMIT_MESSAGE);
+            sl_send_reply(RATE_LIMIT_CODE, RATE_LIMIT_MESSAGE);
             xlog("L_INFO", "$ci|RL-$var(entity-type) log| Out of TOTAL($rm) $var(tpm) rate limits: $sht(tpm=>$var(tpm)) > $var(ltpm))");
 #        }
         exit;