improve exceptions in case of corrupt packages close pipes after exception occoured to avoid lingering connections should fix #788

Tests/MQTTnet.AspNetCore.Tests/SpanBasedMqttPacketWriterTests.cs

@@ -0,0 +1,15 @@
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using MQTTnet.Formatter;
+using MQTTnet.Tests;
+
+namespace MQTTnet.AspNetCore.Tests
+{
+    [TestClass]
+    public class SpanBasedMqttPacketWriterTests : MqttPacketWriter_Tests
+    {
+        protected override IMqttPacketWriter WriterFactory()
+        {
+            return new SpanBasedMqttPacketWriter();
+        }
+    }
+}