Add validation for topics before publishing.

2026-10-20 19:58:57 +08:00 · 2019-03-22 20:37:14 +01:00
parent 673fc5e20c
commit 7c3d88f62d
9 changed files with 84 additions and 9 deletions
@@ -0,0 +1,25 @@
+using MQTTnet.Exceptions;
+
+namespace MQTTnet.Protocol
+{
+    public static class MqttTopicValidator
+    {
+        public static void ThrowIfInvalid(string topic)
+        {
+            if (string.IsNullOrEmpty(topic))
+            {
+                throw new MqttProtocolViolationException("Topic should not be empty.");
+            }
+
+            if (topic.Contains("+"))
+            {
+                throw new MqttProtocolViolationException("The character '+' is not allowed in topics.");
+            }
+
+            if (topic.Contains("#"))
+            {
+                throw new MqttProtocolViolationException("The character '#' is not allowed in topics.");
+            }
+        }
+    }
+}