HTTP Error: org.apache.http.client.ClientProtocolException

'Activity module
Sub Process_Globals
   'These global variables will be declared once when the application starts.
   'These variables can be accessed from all modules.
Dim hc As HttpClient
End Sub

Sub Globals
   'These global variables will be redeclared each time the activity is created.
   'These variables can only be accessed from this module.
Dim tabhoster As TabHost
Dim pnl1,pnl2,pnl3 As Panel
Dim clear As Button
Dim scan As Button
Dim tbl As table
Dim id As Label
Dim bcreader As ABZxing


End Sub

Sub Activity_Create(FirstTime As Boolean)
If FirstTime Then
hc.Initialize("hc")
End If
tabhoster.Initialize("tabhoster")
pnl1.Initialize("pnl1")
pnl2.Initialize("pnl2")
pnl3.Initialize("pnl3")
tbl.Initialize(pnl3,"tbl",2)
id.Initialize("id")
clear.Initialize("clear")
scan.Initialize("scan")


pnl1.AddView(clear,20%x,30%y,60%x,15%y)
pnl2.AddView(scan,20%x,30%y,60%x,15%y)
pnl2.AddView(id,scan.Left,scan.Top+scan.Height+5%y,10%x,10%y)
tbl.AddToPanel(pnl3,0,0,100%x,100%y)


tabhoster.AddTab2("Service",pnl1)
tabhoster.AddTab2("Scan",pnl2)
tabhoster.AddTab2("Table",pnl3)

Activity.AddView(tabhoster,0,0,100%x,100%y)
tbl.SetHeader(Array As String("ID","Barcode"))


clear.Text="Clear"
scan.Text="Scan"

End Sub

Sub Activity_Resume

End Sub

Sub Activity_Pause (UserClosed As Boolean)

End Sub
Sub scan_click
bcreader.ABGetBarcode("bcreader","")
End Sub
Sub BCREADER_BarcodeFound (barCode As String, formatName As String)
   ExecuteRemoteQuery("INSERT INTO barcodes (id, barcode) VALUES (NULL, '"&barCode&"')",1)
End Sub
Sub ExecuteRemoteQuery(Query As String, TaskId As Int)
   Dim req As HttpRequest
   req.InitializePost2("http://192.168.20.120/b4atest/barcode1/b4aconnector.php", Query.GetBytes("UTF8"))
   'req.InitializeGet("http://192.168.20.120/b4atest/barcode1/b4aconnector.php?"&Query)
   hc.Execute(req, TaskId)
End Sub
Sub tabhoster_TabChanged

   ExecuteRemoteQuery("SELECT * FROM  barcodes",2)

End Sub
Sub hc_ResponseSuccess (Response As HttpResponse, TaskId As Int)
   Dim res As String
   res = Response.GetString("UTF8")
   Log("Response from server: " & res)
   Dim parser As JSONParser
   parser.Initialize(res)
   Select TaskId
      Case 2
         
         Dim barcodes As List
         barcodes = parser.NextArray 'returns a list with maps
         
         If barcodes.Size=0 Then
         Msgbox("No values","Table is empty")
         Return
         End If
         
         For i = 0 To barcodes.Size - 1
            Dim m As Map
            m = barcodes.Get(i)
            
            
             tbl.AddRow(Array As String(m.Get("id"),m.Get("barcode")))
            
         Next
         
      
   End Select
   Response.Release
End Sub

Sub hc_ResponseError (Response As HttpResponse, Reason As String, StatusCode As Int, TaskId As Int)
   Log("Error: " & Reason & ", StatusCode: " & StatusCode)
   If Response <> Null Then
      Log(Response.GetString("UTF8"))
      Response.Release
   End If
   
End Sub