From a4ad5f2de7e70c71f5c6695f2a9272bf40f753a7 Mon Sep 17 00:00:00 2001
From: Dotty Dotter <dotty@Mac.wideopen.space>
Date: Thu, 16 Apr 2026 21:55:41 +0200
Subject: [PATCH] =?UTF-8?q?fix:=20Kamailio=20t=5Frelay=5Fto=5Ftcp=20?=
 =?UTF-8?q?=E2=80=94=20Force=20TCP=20relay?=
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Kamailio läuft TCP-only, t_relay versuchte per UDP zu routen.
t_relay_to_tcp erzwingt TCP für alle Relays.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
---
 kamailio/kamailio.cfg | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/kamailio/kamailio.cfg b/kamailio/kamailio.cfg
index 575349a..eb10fd7 100644
--- a/kamailio/kamailio.cfg
+++ b/kamailio/kamailio.cfg
@@ -217,7 +217,8 @@ route[RELAY] {
     if (isbflagset(7)) {
         add_rr_param(";nat=yes");
     }
-    if (!t_relay()) {
+    # Force TCP — Kamailio hat keinen UDP-Listener
+    if (!t_relay_to_tcp()) {
         sl_send_reply("500", "Relay Error");
     }
 }