Added interceptor for undelivered messages.

2026-10-20 03:24:33 +08:00 · 2020-06-09 20:54:42 +02:00
parent 92518fc4ec
commit 75dfe68a94
8 changed files with 56 additions and 1 deletions
@@ -1384,5 +1384,33 @@ namespace MQTTnet.Tests
                Assert.AreEqual(expectedReceivedMessagesCount, receivedMessagesCount);
            }
        }
+
+        [TestMethod]
+        public async Task Intercept_Undelivered()
+        {
+            using (var testEnvironment = new TestEnvironment())
+            {
+                var undeliverd = string.Empty;
+                var svr = await testEnvironment.StartServerAsync(new MqttServerOptionsBuilder().WithUndeliveredMessageInterceptor(
+                              context =>
+                              {
+                                  undeliverd = context.ApplicationMessage.Topic;
+                              }));
+
+                var topicAReceived = false;
+                var topicBReceived = false;
+
+                var client = await testEnvironment.ConnectClientAsync();
+
+                await client.SubscribeAsync("b");
+
+                await client.PublishAsync("a", null, MqttQualityOfServiceLevel.ExactlyOnce);
+
+                await Task.Delay(500);
+
+                Assert.AreEqual(undeliverd, "a");
+
+            }
+        }
    }
 }