Fixed more exception handling and added the ability to close a running interface

MewtocolNet/Mewtocol/MewtocolInterface.cs

@@ -195,6 +195,20 @@ namespace MewtocolNet {
 
         }
 
+        /// <summary>
+        /// Closes all permanent polling 
+        /// </summary>
+        public void Disconnect () {
+
+            if (!IsConnected)
+                return;
+
+            OnMajorSocketException();
+
+            PriorityTasks.Clear();
+
+        }
+
         /// <summary>
         /// Attaches a poller to the interface that continously 
         /// polls the registered data registers and writes the values to them
@@ -532,7 +546,6 @@ namespace MewtocolNet {
         /// Calculates checksum and sends a command to the PLC then awaits results
         /// </summary>
         /// <param name="_msg">MEWTOCOL Formatted request string ex: %01#RT</param>
-        /// <param name="_close">Auto close of frame [true]%01#RT01\r [false]%01#RT</param>
         /// <returns>Returns the result</returns>
         public async Task<CommandResult> SendCommandAsync (string _msg) {
 
@@ -622,6 +635,9 @@ namespace MewtocolNet {
                         } catch (IOException) {
                             Logger.Log($"Critical IO exception on send", LogLevel.Critical, this);
                             return null;
+                        } catch (SocketException) {
+                            OnMajorSocketException();
+                            return null;
                         }
 
                         //await result
@@ -636,6 +652,9 @@ namespace MewtocolNet {
                         } catch (IOException) {
                             Logger.Log($"Critical IO exception on receive", LogLevel.Critical, this);
                             return null;
+                        } catch (SocketException) {
+                            OnMajorSocketException();
+                            return null;
                         }
 
                         sw.Stop();
@@ -650,6 +669,17 @@ namespace MewtocolNet {
 
                 } catch (SocketException) {
 
+                    OnMajorSocketException();
+                    return null;
+
+                }
+
+            }
+
+        }
+
+        private void OnMajorSocketException () {
+
             if (IsConnected) {
 
                 Logger.Log("The PLC connection was closed", LogLevel.Error, this);
@@ -660,15 +690,8 @@ namespace MewtocolNet {
 
             }
 
-                    return null;
-
         }
 
-            }
-
-        }
-
-
         #endregion
 
         #region Accessing Info 

MewtocolNet/MewtocolNet.csproj

@@ -2,7 +2,7 @@
   <PropertyGroup>
     <TargetFramework>netstandard2.0</TargetFramework>
     <PackageId>MewtocolNet</PackageId>
-    <Version>0.4.1</Version>
+    <Version>0.4.2</Version>
     <Authors>Felix Weiss</Authors>
     <Company>Womed</Company>
     <GeneratePackageOnBuild>true</GeneratePackageOnBuild>