diff --git a/NKC_SDK/NKC.cs b/NKC_SDK/NKC.cs
index f33eb88..aa0e77e 100644
--- a/NKC_SDK/NKC.cs
+++ b/NKC_SDK/NKC.cs
@@ -1,5 +1,6 @@
 using Newtonsoft.Json;
 using System;
+using System.IO;
 using System.Net;
 using System.Net.NetworkInformation;
 
@@ -27,7 +28,7 @@ namespace NKC_SDK
       }
       catch (Exception exc)
       {
-        Log.Instance.Error(exc, $"Eccezione durante callUrl per {URL}{Environment.NewLine}{exc}");
+        Log.Instance.Error($"Eccezione durante callUrl per URL: {URL}{Environment.NewLine}{exc}");
         answ = exc.Message;
       }
       // restituisco valore!
@@ -48,8 +49,11 @@ namespace NKC_SDK
       {
         answ = client.UploadString(URL, payload);
       }
-      catch
-      { }
+      catch (Exception exc)
+      {
+        Log.Instance.Error($"Eccezione durante callUrl per URL: {URL} | payload: {payload}{Environment.NewLine}{exc}");
+        answ = exc.Message;
+      }
       // restituisco valore!
       return answ;
     }
@@ -74,7 +78,10 @@ namespace NKC_SDK
         answ = "ok";
       }
       catch (Exception exc)
-      { }
+      {
+        Log.Instance.Error($"Eccezione durante putData per {URL}{Environment.NewLine}{exc}");
+        answ = exc.Message;
+      }
       // restituisco valore!
       return answ;
     }
@@ -88,14 +95,14 @@ namespace NKC_SDK
     {
       get
       {
-        return $"{_baseUrl}Alive";
+        return $"{_baseUrl}api/Alive";
       }
     }
     protected string urlAliveClock
     {
       get
       {
-        return $"{_baseUrl}Alive/Clock";
+        return $"{_baseUrl}api/Alive/1";
       }
     }
     protected string urlCurrBunk
@@ -117,6 +124,10 @@ namespace NKC_SDK
     {
       return $"{_baseUrl}api/Bunk/{currBunkId}";
     }
+    /// <summary>
+    /// file locale per persistenza BUNK
+    /// </summary>
+    protected string persistFileName = "data/persistFile.json";
 
     #endregion
 
@@ -156,17 +167,14 @@ namespace NKC_SDK
     /// <summary>
     /// Effettua test alive all'indirizzo del server
     /// </summary>
-    public string testAlive
+    public bool testAlive
     {
       get
       {
-        string answ = "";
-        try
-        {
-          answ = callUrl(urlAlive);
-        }
-        catch
-        { }
+        bool answ = false;
+        string returnData = callUrl(urlAlive);
+        returnData = JsonConvert.DeserializeObject<string>(returnData);
+        answ = returnData == "OK";
         // rendo!
         return answ;
       }
@@ -174,13 +182,22 @@ namespace NKC_SDK
     /// <summary>
     /// Effettua test ping all'indirizzo del server
     /// </summary>
-    public PingReply testClock
+    public DateTime testClock
     {
       get
       {
-        Ping myPing = new Ping();
-        // timeout a 1 sec!
-        PingReply answ = myPing.Send(_baseIp, 1000);
+        DateTime oggi = DateTime.Today;
+        DateTime answ = oggi.AddYears(-oggi.Year + 1900).AddMonths(-oggi.Month).AddDays(-oggi.Day + 1);
+        // recupero!
+        string returnData = callUrl(urlAliveClock);
+        try
+        {
+          DateTime.TryParse(JsonConvert.DeserializeObject<string>(returnData), out answ);
+        }
+        catch (Exception exc)
+        {
+          Log.Instance.Error($"Eccezione durante testClock, ricevuto {returnData}{Environment.NewLine}{exc}");
+        }
         // rendo!
         return answ;
       }
@@ -195,14 +212,17 @@ namespace NKC_SDK
     public ProdBunk getFirstBunk()
     {
       ProdBunk answ = null;
+      string rawdata = "";
       // chiamo metodo x recupero WBunk...
       try
       {
-        string rawdata = callUrl(urlCurrBunk);
+        rawdata = callUrl(urlCurrBunk);
         answ = JsonConvert.DeserializeObject<ProdBunk>(rawdata);
       }
-      catch
-      { }
+      catch (Exception exc)
+      {
+        Log.Instance.Error($"Eccezione durante getFirstBunk, ricevuto {rawdata}{Environment.NewLine}{exc}");
+      }
       return answ;
     }
     /// <summary>
@@ -214,14 +234,17 @@ namespace NKC_SDK
     public ProdBunk getNextBunk(int currBunkId)
     {
       ProdBunk answ = null;
+      string rawdata = "";
       // chiamo metodo x recupero WBunk...
       try
       {
-        string rawdata = callUrl(urlNextBunk(currBunkId));
+        rawdata = callUrl(urlNextBunk(currBunkId));
         answ = JsonConvert.DeserializeObject<ProdBunk>(rawdata);
       }
-      catch
-      { }
+      catch (Exception exc)
+      {
+        Log.Instance.Error($"Eccezione durante getNextBunk, ricevuto {rawdata}{Environment.NewLine}{exc}");
+      }
       return answ;
     }
     /// <summary>
@@ -233,32 +256,76 @@ namespace NKC_SDK
     public ProdBunk getBunk(int currBunkId)
     {
       ProdBunk answ = null;
+      string rawdata = "";
       // chiamo metodo x recupero WBunk...
       try
       {
-        string rawdata = callUrl(urlGetBunk(currBunkId));
+        rawdata = callUrl(urlGetBunk(currBunkId));
         answ = JsonConvert.DeserializeObject<ProdBunk>(rawdata);
       }
-      catch
-      { }
+      catch (Exception exc)
+      {
+        Log.Instance.Error($"Eccezione durante getBunk, ricevuto {rawdata}{Environment.NewLine}{exc}");
+      }
       return answ;
     }
     /// <summary>
     /// Effettua salvataggio del BUNK corrente su NKC
     /// </summary>
     /// <param name="currBunk"></param>
-    public void saveBunk(ProdBunk currBunk)
+    public bool saveBunk(ProdBunk currBunk)
     {
+      bool answ = false;
+      string rawdata = "";
       try
       {
         // serializzo oggetto
-        string rawdata = JsonConvert.SerializeObject(currBunk);
+        rawdata = JsonConvert.SerializeObject(currBunk);
         // invio con metodo put!
         putData(urlPutBunk(currBunk.BunkId), rawdata);
+        answ = true;
       }
-      catch
-      { }
-
+      catch (Exception exc)
+      {
+        Log.Instance.Error($"Eccezione durante saveBunk, ricevuto {rawdata}{Environment.NewLine}{exc}");
+      }
+      return answ;
     }
+    /// <summary>
+    /// Oggetto che contiene il BUNK corrente LOCALMENTE
+    /// </summary>
+    public ProdBunk persistedBunk
+    {
+      get
+      {
+        ProdBunk answ = new ProdBunk();
+        try
+        {
+          string rawdata = File.ReadAllText(persistFileName);
+          answ = JsonConvert.DeserializeObject<ProdBunk>(rawdata);
+        }
+        catch (Exception exc)
+        {
+          Log.Instance.Error($"Eccezione durante recupero locale del bunk{Environment.NewLine}{exc}");
+        }
+        return answ;
+      }
+      set
+      {
+        try
+        {
+          // serializzo oggetto
+          string rawdata = JsonConvert.SerializeObject(value);
+          // salvo in locale
+          File.WriteAllText(persistFileName, rawdata);
+        }
+        catch (Exception exc)
+        {
+          Log.Instance.Error($"Eccezione durante salvataggio locale del BUNK{Environment.NewLine}{exc}");
+        }
+      }
+    }
+
+
   }
 }
diff --git a/RedisExample/Form1.Designer.vb b/RedisExample/Form1.Designer.vb
index 1081722..6419670 100644
--- a/RedisExample/Form1.Designer.vb
+++ b/RedisExample/Form1.Designer.vb
@@ -47,6 +47,7 @@ Partial Class Form1
     Me.lblPing = New System.Windows.Forms.Label()
     Me.btnAlive = New System.Windows.Forms.Button()
     Me.lblAlive = New System.Windows.Forms.Label()
+    Me.btnPersist = New System.Windows.Forms.Button()
     Me.SuspendLayout()
     '
     'btnReset
@@ -250,7 +251,7 @@ Partial Class Form1
     Me.btnAlive.Name = "btnAlive"
     Me.btnAlive.Size = New System.Drawing.Size(75, 23)
     Me.btnAlive.TabIndex = 23
-    Me.btnAlive.Text = "Test Ping"
+    Me.btnAlive.Text = "Test Alive"
     Me.btnAlive.UseVisualStyleBackColor = True
     '
     'lblAlive
@@ -262,11 +263,21 @@ Partial Class Form1
     Me.lblAlive.TabIndex = 24
     Me.lblAlive.Text = "alive???"
     '
+    'btnPersist
+    '
+    Me.btnPersist.Location = New System.Drawing.Point(423, 86)
+    Me.btnPersist.Name = "btnPersist"
+    Me.btnPersist.Size = New System.Drawing.Size(75, 23)
+    Me.btnPersist.TabIndex = 25
+    Me.btnPersist.Text = "Save Local"
+    Me.btnPersist.UseVisualStyleBackColor = True
+    '
     'Form1
     '
     Me.AutoScaleDimensions = New System.Drawing.SizeF(6.0!, 13.0!)
     Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font
     Me.ClientSize = New System.Drawing.Size(800, 450)
+    Me.Controls.Add(Me.btnPersist)
     Me.Controls.Add(Me.lblAlive)
     Me.Controls.Add(Me.btnAlive)
     Me.Controls.Add(Me.lblPing)
@@ -324,4 +335,5 @@ Partial Class Form1
     Friend WithEvents lblPing As Label
   Friend WithEvents btnAlive As Button
   Friend WithEvents lblAlive As Label
+  Friend WithEvents btnPersist As Button
 End Class
diff --git a/RedisExample/Form1.vb b/RedisExample/Form1.vb
index fba3c82..c37faa0 100644
--- a/RedisExample/Form1.vb
+++ b/RedisExample/Form1.vb
@@ -213,7 +213,16 @@ Public Class Form1
 
   Private Sub btnAlive_Click(sender As Object, e As EventArgs) Handles btnAlive.Click
     Dim answ As String = ""
-    answ = currNKC.testAlive
+    If (currNKC.testAlive) Then
+      answ = currNKC.testClock
+      lblAlive.Text = "Server Alive con clock " + answ
+
+    End If
+
+  End Sub
+
+  Private Sub btnPersist_Click(sender As Object, e As EventArgs) Handles btnPersist.Click
+    currNKC.persistedBunk = currentBunk
 
   End Sub
 End Class
diff --git a/RedisExample/RedisExample.vbproj b/RedisExample/RedisExample.vbproj
index 6effbf8..53d42a7 100644
--- a/RedisExample/RedisExample.vbproj
+++ b/RedisExample/RedisExample.vbproj
@@ -119,7 +119,12 @@
     <EmbeddedResource Include="ReportTest.rdlc" />
   </ItemGroup>
   <ItemGroup>
-    <None Include="logs\.placeholder" />
+    <None Include="data\.placeholder">
+      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+    </None>
+    <None Include="logs\.placeholder">
+      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+    </None>
     <None Include="My Project\Application.myapp">
       <Generator>MyApplicationCodeGenerator</Generator>
       <LastGenOutput>Application.Designer.vb</LastGenOutput>
diff --git a/RedisExample/data/.placeholder b/RedisExample/data/.placeholder
new file mode 100644
index 0000000..5f28270
--- /dev/null
+++ b/RedisExample/data/.placeholder
@@ -0,0 +1 @@
+
\ No newline at end of file