From eb6c534dc6a8ff660cae0ee163f12592c03c77f3 Mon Sep 17 00:00:00 2001
From: Paolo <paolo.visintin@timenet.it>
Date: Tue, 24 Dec 2024 11:49:32 +0100
Subject: [PATCH] [OW-455] Implement topos disable when header topos : 0

---
 modules/kamailio/config/kamailio.cfg | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/modules/kamailio/config/kamailio.cfg b/modules/kamailio/config/kamailio.cfg
index 2572f4c..5da4a0b 100644
--- a/modules/kamailio/config/kamailio.cfg
+++ b/modules/kamailio/config/kamailio.cfg
@@ -781,6 +781,14 @@ failure_route[MANAGE_FAILURE] {
 # event_route[topos:msg-sending]
 # -----------------------------------------------------------------------------
 event_route[topos:msg-sending] {
+    if is_method("INVITE") {
+      if($hdr(topos) == "0") {
+        xlog('L_INFO', "(event_route[topos:msg-sending]) $ci $rm-$cs topos: $hdr(topos) ----- will not apply topos\n");
+        remove_hf("topos");
+        msg_apply_changes();
+        drop;
+      }
+    }
     if ($rd!=$null) {
         if is_method("OPTIONS|NOTIFY|SUBSCRIBE") {
             drop;