Fix

Modbus.Net/Modbus.Net/Controller/FifoController.cs

@@ -46,8 +46,6 @@ namespace Modbus.Net
 
         /// <inheritdoc />
         protected override void SendingMessageControlInner()
-        {
-            try
         {
             _taskCycleSema?.WaitOne();
             while (!_taskCancel)
@@ -58,6 +56,8 @@ namespace Modbus.Net
                 }
                 bool sendSuccess = false;
                 lock (WaitingMessages)
+                {
+                    try
                     {
                         if (_currentSendingPos == null)
                         {
@@ -84,22 +84,24 @@ namespace Modbus.Net
                             }
                         }
                     }
+                    catch (ObjectDisposedException e)
+                    {
+                        logger.LogError(e, "Controller _currentSendingPos disposed");
+                        _currentSendingPos = null;
+                        sendSuccess = true;
+                    }
+                    catch (Exception e)
+                    {
+                        logger.LogError(e, "Controller throws exception");
+                        _taskCancel = true;
+                    }
+                }
                 if (sendSuccess)
                 {
                     _taskCycleSema?.WaitOne();
                 }
             }
         }
-            catch (ObjectDisposedException)
-            {
-                //ignore
-            }
-            catch (Exception e)
-            {
-                logger.LogError(e, "Controller throws exception");
-            }
-
-        }
 
         /// <inheritdoc />
         public override void SendStart()