Merge pull request #1076 from dagophil/bug/topic-filter-comparer-edge-case

The topic filter comparer now checks for e.g. "foo/" matching "foo/#".

Source/MQTTnet/Server/MqttTopicFilterComparer.cs

@@ -31,6 +31,13 @@ namespace MQTTnet.Server
                         {
                             return true;
                         }
+                        // Check for e.g. foo/ matching foo/#
+                        if (sPos == sLen - 2
+                                && filter[sPos] == LevelSeparator
+                                && filter[sPos + 1] == MultiLevelWildcard)
+                        {
+                            return true;
+                        }
                     }
 
                     sPos++;

Tests/MQTTnet.Core.Tests/TopicFilterComparer_Tests.cs

@@ -54,6 +54,12 @@ namespace MQTTnet.Tests
             CompareAndAssert("A/B/C/D", "A/C/#", false);
         }
 
+        [TestMethod]
+        public void TopicFilterComparer_EndMultipleLevelsWildcardMatchEmptyLevel()
+        {
+            CompareAndAssert("A/", "A/#", true);
+        }
+
         [TestMethod]
         public void TopicFilterComparer_AllLevelsWildcardMatch()
         {