[MQTTnet, MQTTnet.Extensions.ManagedClient] Fixed bug that allowed invalid subscriptions (Thanks to @marcelwinh). (#1226)

2026-10-26 16:24:10 +08:00 · 2021-09-05 11:42:42 +02:00
parent d1c883ebae
commit 3cdf6d1261
6 changed files with 81 additions and 2 deletions
@@ -42,5 +42,15 @@ namespace MQTTnet.Protocol
                }
            }
        }
+
+        public static void ThrowIfInvalidSubscribe(string topic)
+        {
+            if (string.IsNullOrEmpty(topic))
+            {
+                throw new MqttProtocolViolationException("Topic should not be empty.");
+            }
+
+            if (topic.IndexOf("#") != -1 && topic.IndexOf("#") != topic.Length - 1) throw new MqttProtocolViolationException("The character '#' is only allowed as last character");
+        }
    }
 }