Add new method for reading a single retained message (#1676)

2026-10-28 17:22:37 +08:00 · 2023-02-15 19:46:37 +01:00
parent 9cbd5dd778
commit b599a832da
3 changed files with 37 additions and 9 deletions
@@ -204,6 +204,18 @@ namespace MQTTnet.Server
            return _retainedMessagesManager.GetMessages();
        }

+        public Task<MqttApplicationMessage> GetRetainedMessageAsync(string topic)
+        {
+            if (topic == null)
+            {
+                throw new ArgumentNullException(nameof(topic));
+            }
+
+            ThrowIfNotStarted();
+
+            return _retainedMessagesManager.GetMessage(topic);
+        }
+
        public Task<IList<MqttSessionStatus>> GetSessionsAsync()
        {
            ThrowIfNotStarted();
@@ -233,7 +245,7 @@ namespace MQTTnet.Server
            }

            var sessionItems = injectedApplicationMessage.CustomSessionItems ?? ServerSessionItems;
-            
+
            return _clientSessionsManager.DispatchApplicationMessage(
                injectedApplicationMessage.SenderClientId,
                sessionItems,