diff --git a/TestBench/ControlExtensions.cs b/TestBench/ControlExtensions.cs
new file mode 100644
index 0000000..5298a2a
--- /dev/null
+++ b/TestBench/ControlExtensions.cs
@@ -0,0 +1,36 @@
+using System;
+using System.Windows.Forms;
+
+namespace TestBench
+{
+    /// <summary>
+    /// Helper gestione UITHread e deleghe
+    /// https://www.codeproject.com/Articles/37642/Avoiding-InvokeRequired
+    /// </summary>
+    internal static class ControlExtensions
+    {
+        #region Public Methods
+
+        public static void UIThread(this Control control, Action code)
+        {
+            if (control.InvokeRequired)
+            {
+                control.BeginInvoke(code);
+                return;
+            }
+            code.Invoke();
+        }
+
+        public static void UIThreadInvoke(this Control control, Action code)
+        {
+            if (control.InvokeRequired)
+            {
+                control.Invoke(code);
+                return;
+            }
+            code.Invoke();
+        }
+
+        #endregion Public Methods
+    }
+}
\ No newline at end of file
diff --git a/TestBench/MainFOrm.Designer.cs b/TestBench/MainFOrm.Designer.cs
index c49ccf6..ba04413 100644
--- a/TestBench/MainFOrm.Designer.cs
+++ b/TestBench/MainFOrm.Designer.cs
@@ -90,15 +90,15 @@
             this.label10 = new System.Windows.Forms.Label();
             this.txtUser = new System.Windows.Forms.TextBox();
             this.label9 = new System.Windows.Forms.Label();
+            this.tabPage8 = new System.Windows.Forms.TabPage();
+            this.btnStartSub = new System.Windows.Forms.Button();
+            this.txtMessaggio = new System.Windows.Forms.TextBox();
+            this.btnSendMessage = new System.Windows.Forms.Button();
+            this.txtChannelName = new System.Windows.Forms.TextBox();
+            this.label12 = new System.Windows.Forms.Label();
             this.clockTimer = new System.Windows.Forms.Timer(this.components);
             this.LogTimer = new System.Windows.Forms.Timer(this.components);
-            this.tabPage8 = new System.Windows.Forms.TabPage();
-            this.label12 = new System.Windows.Forms.Label();
-            this.txtChannelName = new System.Windows.Forms.TextBox();
-            this.btnSendMessage = new System.Windows.Forms.Button();
-            this.txtMessaggio = new System.Windows.Forms.TextBox();
-            this.btnStartSub = new System.Windows.Forms.Button();
-            this.lblChannerReceive = new System.Windows.Forms.Label();
+            this.lblChannelLog = new System.Windows.Forms.Label();
             this.groupBox1.SuspendLayout();
             this.tabControl1.SuspendLayout();
             this.tabPage1.SuspendLayout();
@@ -291,7 +291,7 @@
             this.tabControl1.Location = new System.Drawing.Point(0, 0);
             this.tabControl1.Name = "tabControl1";
             this.tabControl1.SelectedIndex = 0;
-            this.tabControl1.Size = new System.Drawing.Size(776, 379);
+            this.tabControl1.Size = new System.Drawing.Size(776, 392);
             this.tabControl1.TabIndex = 10;
             // 
             // tabPage1
@@ -776,19 +776,9 @@
             this.label9.TabIndex = 0;
             this.label9.Text = "User";
             // 
-            // clockTimer
-            // 
-            this.clockTimer.Interval = 50;
-            this.clockTimer.Tick += new System.EventHandler(this.clockTimer_Tick);
-            // 
-            // LogTimer
-            // 
-            this.LogTimer.Interval = 10;
-            this.LogTimer.Tick += new System.EventHandler(this.LogTimer_Tick);
-            // 
             // tabPage8
             // 
-            this.tabPage8.Controls.Add(this.lblChannerReceive);
+            this.tabPage8.Controls.Add(this.lblChannelLog);
             this.tabPage8.Controls.Add(this.btnStartSub);
             this.tabPage8.Controls.Add(this.txtMessaggio);
             this.tabPage8.Controls.Add(this.btnSendMessage);
@@ -797,11 +787,50 @@
             this.tabPage8.Location = new System.Drawing.Point(4, 22);
             this.tabPage8.Name = "tabPage8";
             this.tabPage8.Padding = new System.Windows.Forms.Padding(3);
-            this.tabPage8.Size = new System.Drawing.Size(768, 353);
+            this.tabPage8.Size = new System.Drawing.Size(768, 366);
             this.tabPage8.TabIndex = 7;
             this.tabPage8.Text = "PubSub (REDIS)";
             this.tabPage8.UseVisualStyleBackColor = true;
             // 
+            // btnStartSub
+            // 
+            this.btnStartSub.Location = new System.Drawing.Point(619, 12);
+            this.btnStartSub.Name = "btnStartSub";
+            this.btnStartSub.Size = new System.Drawing.Size(141, 23);
+            this.btnStartSub.TabIndex = 5;
+            this.btnStartSub.Text = "Start Channel Sub";
+            this.btnStartSub.UseVisualStyleBackColor = true;
+            this.btnStartSub.Click += new System.EventHandler(this.btnStartSub_Click);
+            // 
+            // txtMessaggio
+            // 
+            this.txtMessaggio.Enabled = false;
+            this.txtMessaggio.Location = new System.Drawing.Point(103, 62);
+            this.txtMessaggio.Name = "txtMessaggio";
+            this.txtMessaggio.Size = new System.Drawing.Size(152, 20);
+            this.txtMessaggio.TabIndex = 4;
+            this.txtMessaggio.Text = "...";
+            this.txtMessaggio.TextChanged += new System.EventHandler(this.txtMessaggio_TextChanged);
+            // 
+            // btnSendMessage
+            // 
+            this.btnSendMessage.Enabled = false;
+            this.btnSendMessage.Location = new System.Drawing.Point(23, 62);
+            this.btnSendMessage.Name = "btnSendMessage";
+            this.btnSendMessage.Size = new System.Drawing.Size(74, 23);
+            this.btnSendMessage.TabIndex = 2;
+            this.btnSendMessage.Text = "Send";
+            this.btnSendMessage.UseVisualStyleBackColor = true;
+            this.btnSendMessage.Click += new System.EventHandler(this.btnSendMessage_Click);
+            // 
+            // txtChannelName
+            // 
+            this.txtChannelName.Location = new System.Drawing.Point(103, 14);
+            this.txtChannelName.Name = "txtChannelName";
+            this.txtChannelName.Size = new System.Drawing.Size(152, 20);
+            this.txtChannelName.TabIndex = 1;
+            this.txtChannelName.Text = "myTestChannel";
+            // 
             // label12
             // 
             this.label12.AutoSize = true;
@@ -811,60 +840,34 @@
             this.label12.TabIndex = 0;
             this.label12.Text = "Channel Name";
             // 
-            // txtChannelName
+            // clockTimer
             // 
-            this.txtChannelName.Location = new System.Drawing.Point(103, 14);
-            this.txtChannelName.Name = "txtChannelName";
-            this.txtChannelName.Size = new System.Drawing.Size(152, 20);
-            this.txtChannelName.TabIndex = 1;
-            this.txtChannelName.Text = "myTestChannel";
+            this.clockTimer.Interval = 50;
+            this.clockTimer.Tick += new System.EventHandler(this.clockTimer_Tick);
             // 
-            // btnSendMessage
+            // LogTimer
             // 
-            this.btnSendMessage.Location = new System.Drawing.Point(23, 62);
-            this.btnSendMessage.Name = "btnSendMessage";
-            this.btnSendMessage.Size = new System.Drawing.Size(74, 23);
-            this.btnSendMessage.TabIndex = 2;
-            this.btnSendMessage.Text = "Send";
-            this.btnSendMessage.UseVisualStyleBackColor = true;
-            this.btnSendMessage.Click += new System.EventHandler(this.btnSendMessage_Click);
+            this.LogTimer.Interval = 10;
+            this.LogTimer.Tick += new System.EventHandler(this.LogTimer_Tick);
             // 
-            // txtMessaggio
+            // lblChannelLog
             // 
-            this.txtMessaggio.Location = new System.Drawing.Point(103, 62);
-            this.txtMessaggio.Name = "txtMessaggio";
-            this.txtMessaggio.Size = new System.Drawing.Size(152, 20);
-            this.txtMessaggio.TabIndex = 4;
-            this.txtMessaggio.Text = "...";
-            this.txtMessaggio.TextChanged += new System.EventHandler(this.txtMessaggio_TextChanged);
-            // 
-            // btnStartSub
-            // 
-            this.btnStartSub.Location = new System.Drawing.Point(619, 17);
-            this.btnStartSub.Name = "btnStartSub";
-            this.btnStartSub.Size = new System.Drawing.Size(141, 23);
-            this.btnStartSub.TabIndex = 5;
-            this.btnStartSub.Text = "Start Channel Sub";
-            this.btnStartSub.UseVisualStyleBackColor = true;
-            this.btnStartSub.Click += new System.EventHandler(this.btnStartSub_Click);
-            // 
-            // lblChannerReceive
-            // 
-            this.lblChannerReceive.AutoSize = true;
-            this.lblChannerReceive.BackColor = System.Drawing.Color.Black;
-            this.lblChannerReceive.ForeColor = System.Drawing.Color.Gold;
-            this.lblChannerReceive.Location = new System.Drawing.Point(360, 67);
-            this.lblChannerReceive.MinimumSize = new System.Drawing.Size(400, 100);
-            this.lblChannerReceive.Name = "lblChannerReceive";
-            this.lblChannerReceive.Size = new System.Drawing.Size(400, 100);
-            this.lblChannerReceive.TabIndex = 6;
-            this.lblChannerReceive.Text = "...";
+            this.lblChannelLog.AutoSize = true;
+            this.lblChannelLog.BackColor = System.Drawing.Color.Black;
+            this.lblChannelLog.ForeColor = System.Drawing.Color.Yellow;
+            this.lblChannelLog.Location = new System.Drawing.Point(378, 65);
+            this.lblChannelLog.MaximumSize = new System.Drawing.Size(400, 300);
+            this.lblChannelLog.MinimumSize = new System.Drawing.Size(400, 300);
+            this.lblChannelLog.Name = "lblChannelLog";
+            this.lblChannelLog.Size = new System.Drawing.Size(400, 300);
+            this.lblChannelLog.TabIndex = 9;
+            this.lblChannelLog.Text = "log";
             // 
             // MainForm
             // 
             this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
             this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
-            this.ClientSize = new System.Drawing.Size(776, 379);
+            this.ClientSize = new System.Drawing.Size(776, 392);
             this.Controls.Add(this.tabControl1);
             this.Margin = new System.Windows.Forms.Padding(2);
             this.Name = "MainForm";
@@ -970,7 +973,7 @@
         private System.Windows.Forms.Button btnSendMessage;
         private System.Windows.Forms.TextBox txtChannelName;
         private System.Windows.Forms.Label label12;
-        private System.Windows.Forms.Label lblChannerReceive;
+        private System.Windows.Forms.Label lblChannelLog;
     }
 }
 
diff --git a/TestBench/MainFOrm.cs b/TestBench/MainFOrm.cs
index cd91784..9f13460 100644
--- a/TestBench/MainFOrm.cs
+++ b/TestBench/MainFOrm.cs
@@ -296,17 +296,32 @@ namespace TestBench
 
         protected MessagePipe MPipeChannel = new MessagePipe("testCh");
 
+        protected bool pubSubEnabled = false;
+
         private void btnStartSub_Click(object sender, EventArgs e)
         {
-            // avvio un nuovo messaggePipe x il canale richiesto...
-            MPipeChannel = new MessagePipe(txtChannelName.Text, false);
-            MPipeChannel.EA_NewMessage += MPipeChannel_EA_NewMessage;
-            StringBuilder sb = new StringBuilder();
-            sb.AppendLine("--------------------------------------");
-            sb.AppendLine($" Start PubSub |  {DateTime.Now:HH:mm:ss}");
-            sb.AppendLine("--------------------------------------");
-            lblChannelReceive.Text = sb.ToString();
-            lblChannelReceive.Refresh();
+            pubSubEnabled = !pubSubEnabled;
+            btnStartSub.Text = pubSubEnabled ? "Stop PubSub" : "Start Sub";
+            btnSendMessage.Enabled = pubSubEnabled;
+            txtMessaggio.Enabled = pubSubEnabled;
+            // sistemo messaggio
+            if (pubSubEnabled)
+            {
+                // avvio un nuovo messaggePipe x il canale richiesto...
+                MPipeChannel = new MessagePipe(txtChannelName.Text, false);
+                MPipeChannel.EA_NewMessage += MPipeChannel_EA_NewMessage;
+                StringBuilder sb = new StringBuilder();
+                sb.AppendLine("--------------------------------------");
+                sb.AppendLine($" Start PubSub |  {DateTime.Now:HH:mm:ss}");
+                sb.AppendLine("--------------------------------------");
+                logPubSubChannel = sb.ToString();
+            }
+            else
+            {
+                logWatchString = "";
+                logPubSubChannel = ".... waiting ....";
+                MPipeChannel.EA_NewMessage -= MPipeChannel_EA_NewMessage;
+            }
         }
 
         private void MPipeChannel_EA_NewMessage(object sender, EventArgs e)
@@ -315,9 +330,7 @@ namespace TestBench
             PubSubEventArgs currArgs = (PubSubEventArgs)e;
             StringBuilder sb = new StringBuilder();
             sb.AppendLine($"{currArgs.newMessage} | RECEIVED: {DateTime.Now:HH:mm:ss.ffffff}");
-            string oldMess = lblChannelReceive.Text;
-            lblChannelReceive.Text = $"{sb.ToString()}{oldMess}";
-            lblChannelReceive.Refresh();
+            logPubSubChannel = sb.ToString();
         }
 
         protected string testoMessaggio
@@ -332,7 +345,59 @@ namespace TestBench
 
         private void txtMessaggio_TextChanged(object sender, EventArgs e)
         {
-            //MPipeChannel.sendMessage(testoMessaggio);
+            MPipeChannel.sendMessage(testoMessaggio);
+        }
+
+        protected int nLine2show = 30;
+
+        /// <summary>
+        /// Effettua un trim della stringa al numero max di linee da mostrare a video
+        /// </summary>
+        /// <param name="newString"></param>
+        /// <returns></returns>
+        public string limitLine2show(string newString)
+        {
+            if (!string.IsNullOrEmpty(newString))
+            {
+                // se num righe superiore a limite trimmo...
+                if (newString.Split('\n').Length > nLine2show)
+                {
+                    //int idx = newString.LastIndexOf('\r');
+                    int idx = newString.LastIndexOf(Environment.NewLine);
+                    newString = newString.Substring(0, idx);
+                }
+            }
+            return newString;
+        }
+
+        /// <summary>
+        /// Stringa corrente di log...
+        /// </summary>
+        protected string logWatchString { get; set; } = "";
+
+        /// <summary>
+        /// Logwatcher (in modalità "accodamento in testa" ultimi messaggi...)
+        /// </summary>
+        public string logPubSubChannel
+        {
+            get
+            {
+                return lblChannelLog.Text;
+            }
+            set
+            {
+                try
+                {
+                    logWatchString = limitLine2show($"{value}{logWatchString}");
+                    lblChannelLog.Text = logWatchString;
+                    lblChannelLog.Refresh();
+                }
+                catch (Exception exc)
+                {
+                    logger.lg.scriviLog($"Errore in esecuzione logWatcher{Environment.NewLine}--> {value}");
+                    logger.lg.scriviLog($"{exc}");
+                }
+            }
         }
     }
 }
\ No newline at end of file
diff --git a/TestBench/TestBench.csproj b/TestBench/TestBench.csproj
index 1630ca9..136e525 100644
--- a/TestBench/TestBench.csproj
+++ b/TestBench/TestBench.csproj
@@ -85,6 +85,7 @@
     <Reference Include="System.Xml" />
   </ItemGroup>
   <ItemGroup>
+    <Compile Include="ControlExtensions.cs" />
     <Compile Include="MainForm.cs">
       <SubType>Form</SubType>
     </Compile>