From 040d182547df9a5f8a233dcaeba2f2c5d745b734 Mon Sep 17 00:00:00 2001
From: Santiago Lo Coco <se23m504@technikum-wien.at>
Date: Mon, 4 Nov 2024 19:39:28 +0100
Subject: [PATCH] Skip mdns unregister packages

---
 Assets/Scripts/ServiceDiscovery.cs | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Assets/Scripts/ServiceDiscovery.cs b/Assets/Scripts/ServiceDiscovery.cs
index 0a8b7bb..c7141cd 100644
--- a/Assets/Scripts/ServiceDiscovery.cs
+++ b/Assets/Scripts/ServiceDiscovery.cs
@@ -227,6 +227,13 @@ public class ServiceDiscovery : MonoBehaviour
         ushort dataLength = (ushort)IPAddress.NetworkToHostOrder(BitConverter.ToInt16(data, offset + 8));
         offset += 10;
 
+        if (ttl == 0)
+        {
+            Debug.LogWarning($"Zero TTL for {name}");
+            // TODO: Remove service from list
+            return offset + dataLength;
+        }
+
         if (recordType == 1) // A Record
         {
             IPAddress ipAddress = new IPAddress(new ArraySegment<byte>(data, offset, dataLength).ToArray());