1. Resolved the hourly connection termination problem in non-TLS firmware communication.

2. Enhanced socket-level data packet reception throughput.

S7CommPlusGUIBrowser/Form1.cs

@@ -39,8 +39,7 @@ namespace S7CommPlusGUIBrowser
         private void btnConnect_Click(object sender, EventArgs e)
         {
             setStatus("connecting...");
-
-            if (conn != null) conn.Disconnect();
+            if (conn != null)conn.Disconnect();
             conn = new S7CommPlusConnection();
             conn.OnlySecurePGOrPCAndHMI = onlySecurePGOrPCAndHMI;
             int res = conn.Connect(tbIpAddress.Text, tbPassword.Text);
@@ -106,12 +105,11 @@ namespace S7CommPlusGUIBrowser
         private void btnDisconnect_Click(object sender, EventArgs e)
         {
             setStatus("disconnecting...");
-
             if (conn != null) conn.Disconnect();
-            conn = null;
             treeView1.Nodes.Clear();
             txt_plcInfo.Text = "PLCType:";
             setStatus("disconnected");
+            conn = null;
         }
 
         private void Form1_FormClosed(object sender, FormClosedEventArgs e)
@@ -352,10 +350,8 @@ namespace S7CommPlusGUIBrowser
             if (tag == null) return;
 
             tbSymbolicAddress.Text = tag.Address.GetAccessString();
-
-            PlcTags tags = new PlcTags();
-            tags.AddTag(tag);
-            if (tags.ReadTags(conn) != 0) return;
+            
+            if (PlcTags.ReadTags(conn,new List<PlcTag> { tag}) != 0) return;
             tbValue.Text = tag.ToString();
         }
 

S7CommPlusGUIBrowser/obj/Debug/S7CommPlusGUIBrowser.csproj.CoreCompileInputs.cache

@@ -1 +1 @@
-ec14fa67cfbca0656c6c62f93ec1446787c52f00
+a3f5da61a0c9535c5a7df7f53d9805aa7bd1a564

S7CommPlusGUIBrowser/obj/Debug/S7CommPlusGUIBrowser.csproj.FileListAbsolute.txt

@@ -10,3 +10,15 @@ C:\Users\ShenX\Desktop\DiscoverDevices\S7CommPlusV3Driver\S7CommPlusGUIBrowser\o
 C:\Users\ShenX\Desktop\DiscoverDevices\S7CommPlusV3Driver\S7CommPlusGUIBrowser\obj\Debug\S7CommPlusGUIBrowser.csproj.CopyComplete
 C:\Users\ShenX\Desktop\DiscoverDevices\S7CommPlusV3Driver\S7CommPlusGUIBrowser\obj\Debug\S7CommPlusGUIBrowser.exe
 C:\Users\ShenX\Desktop\DiscoverDevices\S7CommPlusV3Driver\S7CommPlusGUIBrowser\obj\Debug\S7CommPlusGUIBrowser.pdb
+C:\Users\ShenX\Desktop\S7CommPlusDriver_Secure\S7CommPlusV3Driver\S7CommPlusGUIBrowser\bin\Debug\S7CommPlusGUIBrowser.exe.config
+C:\Users\ShenX\Desktop\S7CommPlusDriver_Secure\S7CommPlusV3Driver\S7CommPlusGUIBrowser\bin\Debug\S7CommPlusGUIBrowser.exe
+C:\Users\ShenX\Desktop\S7CommPlusDriver_Secure\S7CommPlusV3Driver\S7CommPlusGUIBrowser\bin\Debug\S7CommPlusGUIBrowser.pdb
+C:\Users\ShenX\Desktop\S7CommPlusDriver_Secure\S7CommPlusV3Driver\S7CommPlusGUIBrowser\bin\Debug\S7CommPlusDriver.dll
+C:\Users\ShenX\Desktop\S7CommPlusDriver_Secure\S7CommPlusV3Driver\S7CommPlusGUIBrowser\obj\Debug\S7CommPlusGUIBrowser.csprojAssemblyReference.cache
+C:\Users\ShenX\Desktop\S7CommPlusDriver_Secure\S7CommPlusV3Driver\S7CommPlusGUIBrowser\obj\Debug\S7CommPlusGUIBrowser.Form1.resources
+C:\Users\ShenX\Desktop\S7CommPlusDriver_Secure\S7CommPlusV3Driver\S7CommPlusGUIBrowser\obj\Debug\S7CommPlusGUIBrowser.Properties.Resources.resources
+C:\Users\ShenX\Desktop\S7CommPlusDriver_Secure\S7CommPlusV3Driver\S7CommPlusGUIBrowser\obj\Debug\S7CommPlusGUIBrowser.csproj.GenerateResource.cache
+C:\Users\ShenX\Desktop\S7CommPlusDriver_Secure\S7CommPlusV3Driver\S7CommPlusGUIBrowser\obj\Debug\S7CommPlusGUIBrowser.csproj.CoreCompileInputs.cache
+C:\Users\ShenX\Desktop\S7CommPlusDriver_Secure\S7CommPlusV3Driver\S7CommPlusGUIBrowser\obj\Debug\S7CommPlusGUIBrowser.csproj.CopyComplete
+C:\Users\ShenX\Desktop\S7CommPlusDriver_Secure\S7CommPlusV3Driver\S7CommPlusGUIBrowser\obj\Debug\S7CommPlusGUIBrowser.exe
+C:\Users\ShenX\Desktop\S7CommPlusDriver_Secure\S7CommPlusV3Driver\S7CommPlusGUIBrowser\obj\Debug\S7CommPlusGUIBrowser.pdb