Exemplo n.º 1
0
 void OnShowDialog(GXActionArgs arg)
 {
     if (InvokeRequired)
     {
         BeginInvoke(new ShowUserDialogEventHandler(OnShowDialog), arg).AsyncWaitHandle.WaitOne();
     }
     else
     {
         if (ProfileGenericView.SelectedCells.Count == 1)
         {
             DataGridViewRow row = ProfileGenericView.Rows[ProfileGenericView.SelectedCells[0].RowIndex];
             if (arg.Index == -1)
             {
                 //Add to the white list.
                 string data = "<Array Qty=\"01\" ><Structure Qty=\"04\" ><OctetString Value=\"" + row.Cells[2].Value + "\" /><UInt8 Value=\"63\" /><UInt16 Value=\"0004\" /><UInt8 Value=\"5\" /></Structure></Array>";
                 arg.Action = ActionType.Write;
                 arg.Index  = 2;
                 GXDLMSData d = new GXDLMSData("0.0.94.39.48.255");
                 d.SetDataType(2, DataType.Array);
                 d.Value    = GXDLMSTranslator.XmlToValue(data);
                 arg.Target = d;
             }
             else if (arg.Index == -2)
             {
                 //Add to the black list.
                 string data = "<Array Qty=\"01\" ><OctetString Value=\"" + row.Cells[2].Value + "\" /></Array>";
                 arg.Action = ActionType.Write;
                 arg.Index  = 2;
                 arg.Value  = GXDLMSTranslator.XmlToValue(data);
                 arg.Target = new GXDLMSData("0.0.94.39.47.255");
                 arg.Target.SetDataType(2, DataType.Array);
             }
             else if (arg.Index == -3)
             {
                 //Remove from the white or black list.
                 //Add to the white list.
                 long   unixTime = GXDateTime.ToUnixTime(DateTime.Parse(Convert.ToString(row.Cells[4].Value)));
                 string data     = "<Structure Qty=\"02\" ><OctetString Value=\"" + row.Cells[0].Value + "\" /><UInt32 Value=\"" + unixTime + "\" /></Structure>";
                 arg.Value = GXDLMSTranslator.XmlToValue(data);
                 ProfileGenericView.Rows.Remove(row);
             }
         }
         else
         {
             GXHelpers.ShowMessageBox(this, Properties.Resources.ProfileGenericDeviceAmountWarning, "", MessageBoxButtons.YesNoCancel, MessageBoxIcon.Information);
             arg.Handled = true;
         }
     }
 }
Exemplo n.º 2
0
 /// <summary>
 /// Is profile generic object sorted using date time.
 /// </summary>
 private static bool IsSortedByDateTime(GXObject obj)
 {
     int index = GetAttributeIndex(obj, 3);
     if (index == -1)
     {
         return false;
     }
     try
     {
         GXArray tmp = GXDLMSTranslator.XmlToValue(obj.Attributes[index].Value) as GXArray;
         if (tmp != null)
         {
             //If interface type is clock.
             return (UInt16)((GXStructure)tmp[0])[0] == 8;
         }
     }
     catch(Exception)
     {
         //It's OK if this fails.
     }
     return false;
 }
        static public object ChangeType(object value, DataType type, CultureInfo cultureInfo)
        {
            object ret;

            if (type == DataType.OctetString)
            {
                if (value is byte[])
                {
                    ret = value;
                }
                else
                {
                    ret = GXDLMSTranslator.HexToBytes((string)value);
                }
            }
            else if (type == DataType.DateTime)
            {
                if (value is GXDateTime)
                {
                    ret = value;
                }
                else
                {
                    ret = new GXDateTime((string)value, CultureInfo.InvariantCulture);
                }
            }
            else if (type == DataType.Date)
            {
                if (value is GXDateTime)
                {
                    ret = value;
                }
                else
                {
                    ret = new GXDate((string)value, CultureInfo.InvariantCulture);
                }
            }
            else if (type == DataType.Time)
            {
                if (value is GXDateTime)
                {
                    ret = value;
                }
                else
                {
                    ret = new GXTime((string)value, CultureInfo.InvariantCulture);
                }
            }
            else if (type == DataType.Enum)
            {
                if (value is GXEnum)
                {
                    ret = value;
                }
                else
                {
                    ret = new GXEnum((byte)Convert.ChangeType(value, typeof(byte)));
                }
            }
            else if (type == DataType.Structure || type == DataType.Array)
            {
                ret = GXDLMSTranslator.XmlToValue((string)value);
            }
            else if (type == DataType.BitString)
            {
                ret = new GXBitString((string)value);
            }
            else if (type == DataType.None && value is string && string.IsNullOrEmpty((string)value))
            {
                ret = null;
            }
            else
            {
                ret = Convert.ChangeType(value, GXDLMSConverter.GetDataType(type), cultureInfo);
            }
            return(ret);
        }
Exemplo n.º 4
0
 /// <summary>
 /// Show action data.
 /// </summary>
 /// <param name="sender"></param>
 /// <param name="e"></param>
 private void ActionsList_SelectedIndexChanged(object sender, EventArgs e)
 {
     if (MacrosView.SelectedIndices.Count == 1)
     {
         GXMacro macro = GetMacros()[MacrosView.SelectedIndices[0]];
         if (macro.Type == UserActionType.Get || macro.Type == UserActionType.Set)
         {
             if (!tabControl1.TabPages.Contains(VisualizedTab))
             {
                 tabControl1.TabPages.Insert(0, VisualizedTab);
             }
         }
         else
         {
             if (tabControl1.TabPages.Contains(VisualizedTab))
             {
                 tabControl1.TabPages.Remove(VisualizedTab);
             }
         }
         string actual, expected;
         if (Properties.Settings.Default.MacroRaw)
         {
             expected = macro.Data;
         }
         else
         {
             expected = macro.Value;
         }
         OriginalDataTb.Text = expected;
         if (Results.ContainsKey(macro))
         {
             if (Properties.Settings.Default.MacroRaw)
             {
                 actual   = Results[macro].Data;
                 expected = macro.Data;
             }
             else
             {
                 actual   = Results[macro].Value;
                 expected = macro.Value;
             }
             if (actual != expected)
             {
                 ReplyDataTb.Text    = actual;
                 ActualPanel.Visible = true;
             }
             else
             {
                 ActualPanel.Visible = false;
             }
         }
         else
         {
             ActualPanel.Visible = false;
             ReplyDataTb.Text    = null;
         }
         try
         {
             if (macro.Type == UserActionType.Get || macro.Type == UserActionType.Set)
             {
                 if (macro.ObjectType != 0)
                 {
                     GXDLMSObject obj = GXDLMSClient.CreateObject((ObjectType)macro.ObjectType);
                     if (obj != null)
                     {
                         obj.LogicalName = macro.LogicalName;
                         for (int pos = 1; pos != (obj as IGXDLMSBase).GetAttributeCount() + 1; ++pos)
                         {
                             obj.SetAccess(pos, AccessMode.NoAccess);
                         }
                         obj.SetAccess(macro.Index, AccessMode.ReadWrite);
                         obj.SetDataType(macro.Index, (DataType)macro.DataType);
                         obj.SetUIDataType(macro.Index, (DataType)macro.UIDataType);
                         if (!string.IsNullOrEmpty(macro.Data) && Target != null)
                         {
                             object value = GXDLMSTranslator.XmlToValue(macro.Data);
                             if (value is byte[] && macro.UIDataType != 0)
                             {
                                 value = Target.Comm.client.ChangeType(new GXByteBuffer((byte[])value), (DataType)macro.UIDataType);
                             }
                             else if (value is byte[] &&
                                      macro.DataType != (int)DataType.None &&
                                      macro.DataType != (int)DataType.OctetString)
                             {
                                 if (macro.DataType == (int)DataType.Array ||
                                     macro.DataType == (int)DataType.Structure)
                                 {
                                     GXByteBuffer bb = new GXByteBuffer((byte[])value);
                                     //Skip data type.
                                     bb.Position = 1;
                                     value       = Target.Comm.client.ChangeType(bb, (DataType)macro.DataType);
                                 }
                                 else
                                 {
                                     GXByteBuffer bb = new GXByteBuffer((byte[])value);
                                     value = Target.Comm.client.ChangeType(bb, (DataType)macro.DataType);
                                 }
                             }
                             if (macro.ObjectType == (int)ObjectType.ProfileGeneric && macro.Index == 2 && !string.IsNullOrEmpty(macro.External))
                             {
                                 Target.Comm.client.UpdateValue(obj, 3, GXDLMSTranslator.XmlToValue(macro.External));
                             }
                             Target.Comm.client.UpdateValue(obj, macro.Index, value);
                         }
                         if (SelectedView == null || SelectedView.Target.ObjectType != obj.ObjectType)
                         {
                             //SelectedView must remove from the controls.
                             ObjectPanelFrame.Controls.Clear();
                             if (Target == null)
                             {
                                 SelectedView = GXDlmsUi.GetView(Views, obj, Standard.DLMS);
                             }
                             else
                             {
                                 SelectedView = GXDlmsUi.GetView(Views, obj, Target.Comm.client.Standard);
                             }
                             SelectedView.Target = obj;
                             GXDlmsUi.ObjectChanged(SelectedView, obj, false);
                             SelectedView.OnDirtyChange(macro.Index, true);
                             ObjectPanelFrame.Controls.Add(((Form)SelectedView));
                             ((Form)SelectedView).Show();
                         }
                         else
                         {
                             SelectedView.Target = obj;
                             GXDlmsUi.ObjectChanged(SelectedView, obj, false);
                             SelectedView.OnDirtyChange(macro.Index, true);
                         }
                     }
                 }
             }
         }
         catch (Exception Ex)
         {
             GXDLMS.Common.Error.ShowError(this, Ex);
         }
     }
     else
     {
         OriginalDataTb.Text = "";
         if (GetMacros().Count == 0 && tabControl1.TabPages.Contains(VisualizedTab))
         {
             tabControl1.TabPages.Remove(VisualizedTab);
         }
     }
 }
Exemplo n.º 5
0
        /// <summary>
        /// Read data from the meter.
        /// </summary>
        private static void ReadMeter(object parameter)
        {
            GXDLMSReader reader = null;

            System.Net.Http.HttpClient httpClient = Helpers.client;
            using (GXNet media = (GXNet)parameter)
            {
                try
                {
                    var config = new ConfigurationBuilder()
                                 .SetBasePath(Directory.GetCurrentDirectory())
                                 .AddJsonFile("appsettings.json", optional: true)
                                 .Build();
                    ListenerOptions        listener = config.GetSection("Listener").Get <ListenerOptions>();
                    GXDLMSObjectCollection objects  = new GXDLMSObjectCollection();
                    GXDLMSSecureClient     client   = new GXDLMSSecureClient(listener.UseLogicalNameReferencing, listener.ClientAddress, listener.ServerAddress, (Authentication)listener.Authentication, listener.Password, (InterfaceType)listener.Interface);
                    reader = new GXDLMSReader(client, media, _logger);
                    GXDLMSData ldn = new GXDLMSData("0.0.42.0.0.255");
                    ldn.SetUIDataType(2, DataType.String);
                    reader.InitializeConnection();
                    reader.Read(ldn, 2);
                    Console.WriteLine("Meter connected: " + ldn.Value);
                    //Find device.
                    GXDevice            dev  = null;
                    ListDevicesResponse devs = null;
                    {
                        using (System.Net.Http.HttpResponseMessage response = httpClient.PostAsJsonAsync(Startup.ServerAddress + "/api/device/ListDevices", new ListDevices()
                        {
                            Name = (string)ldn.Value
                        }).Result)
                        {
                            Helpers.CheckStatus(response);
                            devs = response.Content.ReadAsAsync <ListDevicesResponse>().Result;
                        }
                        //If device is unknown.
                        if (devs.Devices.Length == 0)
                        {
                            if (listener.DefaultDeviceTemplate == 0)
                            {
                                string str = "Unknown Meter try to connect to the Gurux.DLMS.AMI server: " + ldn.Value;
                                Console.WriteLine(str);
                                AddSystemError info = new AddSystemError();
                                info.Error = new GXSystemError()
                                {
                                    Error = str
                                };
                                using (System.Net.Http.HttpResponseMessage response = httpClient.PostAsJsonAsync(Startup.ServerAddress + "/api/SystemError/AddSystemError", info).Result)
                                {
                                    Helpers.CheckStatus(response);
                                }
                                return;
                            }
                            ListDeviceTemplates lt = new ListDeviceTemplates()
                            {
                                Ids = new UInt64[] { listener.DefaultDeviceTemplate }
                            };
                            using (System.Net.Http.HttpResponseMessage response = httpClient.PostAsJsonAsync(Startup.ServerAddress + "/api/template/ListDeviceTemplates", lt).Result)
                            {
                                Helpers.CheckStatus(response);
                                ListDeviceTemplatesResponse ret = response.Content.ReadAsAsync <ListDeviceTemplatesResponse>().Result;
                                if (ret.Devices.Length != 1)
                                {
                                    throw new Exception("DefaultDeviceTemplate value is invalid: " + listener.DefaultDeviceTemplate);
                                }
                                dev = new GXDevice();
                                GXDevice.Copy(dev, ret.Devices[0]);
                                dev.Name         = Convert.ToString(ldn.Value);
                                dev.TemplateId   = listener.DefaultDeviceTemplate;
                                dev.Manufacturer = ret.Devices[0].Name;
                            }
                            dev.Dynamic = true;
                            UpdateDevice update = new UpdateDevice();
                            update.Device = dev;
                            using (System.Net.Http.HttpResponseMessage response = httpClient.PostAsJsonAsync(Startup.ServerAddress + "/api/device/UpdateDevice", update).Result)
                            {
                                Helpers.CheckStatus(response);
                                UpdateDeviceResponse r = response.Content.ReadAsAsync <UpdateDeviceResponse>().Result;
                                dev.Id = r.DeviceId;
                            }
                            using (System.Net.Http.HttpResponseMessage response = httpClient.PostAsJsonAsync(Startup.ServerAddress + "/api/device/ListDevices", new ListDevices()
                            {
                                Ids = new UInt64[] { dev.Id }
                            }).Result)
                            {
                                Helpers.CheckStatus(response);
                                devs = response.Content.ReadAsAsync <ListDevicesResponse>().Result;
                            }
                        }
                        else if (devs.Devices.Length != 1)
                        {
                            throw new Exception("There are multiple devices with same name: " + ldn.Value);
                        }
                        else
                        {
                            dev = devs.Devices[0];
                            if (dev.Security != Security.None)
                            {
                                Console.WriteLine("Reading frame counter.");
                                GXDLMSData fc = new GXDLMSData(listener.InvocationCounter);
                                reader.Read(fc, 2);
                                dev.InvocationCounter = 1 + Convert.ToUInt32(fc.Value);
                                Console.WriteLine("Device ID: " + dev.Id + " LDN: " + (string)ldn.Value);
                                Console.WriteLine("Frame counter: " + dev.FrameCounter);
                            }
                            GetNextTaskResponse ret;
                            using (System.Net.Http.HttpResponseMessage response = httpClient.PostAsJsonAsync(Startup.ServerAddress + "/api/task/GetNextTask", new GetNextTask()
                            {
                                Listener = true, DeviceId = dev.Id
                            }).Result)
                            {
                                Helpers.CheckStatus(response);
                                ret = response.Content.ReadAsAsync <GetNextTaskResponse>().Result;
                            }
                            if (ret.Tasks == null || ret.Tasks.Length == 0)
                            {
                                Console.WriteLine("No tasks to execute");
                            }
                            else
                            {
                                Console.WriteLine("Task count: " + ret.Tasks.Length);
                                if (client.ClientAddress != dev.ClientAddress || dev.Security != Security.None)
                                {
                                    reader.Release();
                                    reader.Disconnect();
                                    client             = new GXDLMSSecureClient(dev.UseLogicalNameReferencing, dev.ClientAddress, dev.PhysicalAddress, (Authentication)dev.Authentication, dev.Password, dev.InterfaceType);
                                    client.UtcTimeZone = dev.UtcTimeZone;
                                    client.Standard    = (Standard)dev.Standard;
                                    if (dev.Conformance != 0)
                                    {
                                        client.ProposedConformance = (Conformance)dev.Conformance;
                                    }
                                    client.Priority                    = dev.Priority;
                                    client.ServiceClass                = dev.ServiceClass;
                                    client.Ciphering.SystemTitle       = GXCommon.HexToBytes(dev.ClientSystemTitle);
                                    client.Ciphering.BlockCipherKey    = GXCommon.HexToBytes(dev.BlockCipherKey);
                                    client.Ciphering.AuthenticationKey = GXCommon.HexToBytes(dev.AuthenticationKey);
                                    client.ServerSystemTitle           = GXCommon.HexToBytes(dev.DeviceSystemTitle);
                                    client.Ciphering.InvocationCounter = dev.InvocationCounter;
                                    client.Ciphering.Security          = (Security)dev.Security;
                                    reader = new GXDLMSReader(client, media, _logger);
                                    reader.InitializeConnection();
                                }
                                List <GXValue> values = new List <GXValue>();
                                foreach (GXTask task in ret.Tasks)
                                {
                                    GXDLMSObject obj = GXDLMSClient.CreateObject((ObjectType)task.Object.ObjectType);
                                    obj.LogicalName = task.Object.LogicalName;
                                    try
                                    {
                                        if (task.TaskType == TaskType.Write)
                                        {
                                            if (obj.LogicalName == "0.0.1.1.0.255" && task.Index == 2)
                                            {
                                                client.UpdateValue(obj, task.Index, GXDateTime.ToUnixTime(DateTime.UtcNow));
                                            }
                                            else
                                            {
                                                client.UpdateValue(obj, task.Index, GXDLMSTranslator.XmlToValue(task.Data));
                                            }
                                            reader.Write(obj, task.Index);
                                        }
                                        else if (task.TaskType == TaskType.Action)
                                        {
                                            reader.Method(obj, task.Index, GXDLMSTranslator.XmlToValue(task.Data), DataType.None);
                                        }
                                        else if (task.TaskType == TaskType.Read)
                                        {
                                            Reader.Reader.Read(null, httpClient, reader, task, media, obj);
                                        }
                                    }
                                    catch (Exception ex)
                                    {
                                        task.Result = ex.Message;
                                        AddError error = new AddError();
                                        error.Error = new GXError()
                                        {
                                            DeviceId = dev.Id,
                                            Error    = "Failed to " + task.TaskType + " " + task.Object.LogicalName + ":" + task.Index + ". " + ex.Message
                                        };
                                        using (System.Net.Http.HttpResponseMessage response = httpClient.PostAsJsonAsync(Startup.ServerAddress + "/api/error/AddError", error).Result)
                                        {
                                            Helpers.CheckStatus(response);
                                            response.Content.ReadAsAsync <AddErrorResponse>();
                                        }
                                    }
                                    using (System.Net.Http.HttpResponseMessage response = httpClient.PostAsJsonAsync(Startup.ServerAddress + "/api/task/TaskReady", new TaskReady()
                                    {
                                        Tasks = new GXTask[] { task }
                                    }).Result)
                                    {
                                        Helpers.CheckStatus(response);
                                    }
                                }
                            }
                        }
                    }
                }
                catch (Exception ex)
                {
                    try
                    {
                        AddSystemError info = new AddSystemError();
                        info.Error = new GXSystemError()
                        {
                            Error = ex.Message
                        };
                        using (System.Net.Http.HttpResponseMessage response = httpClient.PostAsJsonAsync(Startup.ServerAddress + "/api/SystemError/AddSystemError", info).Result)
                        {
                            Helpers.CheckStatus(response);
                        }
                    }
                    catch (Exception ex2)
                    {
                    }
                }
                finally
                {
                    if (reader != null)
                    {
                        reader.Close();
                    }
                }
            }
        }
Exemplo n.º 6
0
        private async void DoWork(object ínfo)
        {
            //Give some time DB server to start up.
            Thread.Sleep(1000);
            GetNextTaskResponse ret = null;

            System.Net.Http.HttpResponseMessage response;
            //Don't wait reply. It might that DB server is not up yet.
            if (ínfo != null)
            {
                using (response = await client.PostAsJsonAsync(Startup.ServerAddress + "/api/reader/AddReader", new AddReader()
                {
                    Reader = ínfo as GXReaderInfo
                }))
                {
                    Helpers.CheckStatus(response);
                }
            }
            _logger.LogInformation("Reader Service is started.");
            while (!_cancellationToken.IsCancellationRequested)
            {
                try
                {
                    using (response = await client.PostAsJsonAsync(Startup.ServerAddress + "/api/task/GetNextTask", new GetNextTask()))
                    {
                        Helpers.CheckStatus(response);
                        ret = await response.Content.ReadAsAsync <GetNextTaskResponse>();
                    }
                    if (ret.Tasks != null)
                    {
                        int                pos = 0;
                        GXDevice           dev;
                        GXDLMSSecureClient cl;
                        using (response = await client.PostAsJsonAsync(Startup.ServerAddress + "/api/device/ListDevices", new ListDevices()
                        {
                            Ids = new[] { ret.Tasks[0].Object.DeviceId }
                        }))
                        {
                            Helpers.CheckStatus(response);
                            ListDevicesResponse r = await response.Content.ReadAsAsync <ListDevicesResponse>();

                            if (r.Devices == null || r.Devices.Length == 0)
                            {
                                continue;
                            }
                            dev = r.Devices[0];
                        }
                        IGXMedia media;
                        if (string.Compare(dev.MediaType, typeof(GXNet).FullName, true) == 0)
                        {
                            media = new GXNet();
                        }
                        else if (string.Compare(dev.MediaType, typeof(GXSerial).FullName, true) == 0)
                        {
                            media = new GXSerial();
                        }
                        else if (string.Compare(dev.MediaType, typeof(GXTerminal).FullName, true) == 0)
                        {
                            media = new GXTerminal();
                        }
                        else
                        {
                            Type type = Type.GetType(dev.MediaType);
                            if (type == null)
                            {
                                string ns = "";
                                pos = dev.MediaType.LastIndexOf('.');
                                if (pos != -1)
                                {
                                    ns = dev.MediaType.Substring(0, pos);
                                }
                                foreach (Assembly assembly in AppDomain.CurrentDomain.GetAssemblies())
                                {
                                    if (assembly.GetName().Name == ns)
                                    {
                                        if (assembly.GetType(dev.MediaType, false, true) != null)
                                        {
                                            type = assembly.GetType(dev.MediaType);
                                        }
                                    }
                                }
                            }
                            if (type == null)
                            {
                                throw new Exception("Invalid media type: " + dev.MediaType);
                            }
                            media = (IGXMedia)Activator.CreateInstance(type);
                        }
                        if (media == null)
                        {
                            throw new Exception("Unknown media type '" + dev.MediaType + "'.");
                        }
                        media.Settings = dev.MediaSettings;
                        GXDLMSReader reader;
                        //Read frame counter from the meter.
                        if (dev.Security != 0)
                        {
                            cl = new GXDLMSSecureClient(dev.UseLogicalNameReferencing, 16, dev.PhysicalAddress,
                                                        Authentication.None, null, (InterfaceType)dev.InterfaceType);
                            reader = new GXDLMSReader(cl, media, _logger);
                            media.Open();
                            reader.InitializeConnection();
                            //Read Innovation counter.
                            GXDLMSData d = new GXDLMSData(dev.FrameCounter);
                            reader.Read(d, 2);
                            dev.InvocationCounter = 1 + Convert.ToUInt32(d.Value);
                            reader.Disconnect();
                            media.Close();
                        }
                        cl = new GXDLMSSecureClient(dev.UseLogicalNameReferencing, dev.ClientAddress, dev.PhysicalAddress,
                                                    (Authentication)dev.Authentication, dev.Password, (InterfaceType)dev.InterfaceType);
                        if (dev.HexPassword != null && dev.HexPassword.Length != 0)
                        {
                            cl.Password = dev.HexPassword;
                        }
                        cl.UseUtc2NormalTime     = dev.UtcTimeZone;
                        cl.Standard              = dev.Standard;
                        cl.Ciphering.SystemTitle = GXCommon.HexToBytes(dev.ClientSystemTitle);
                        if (cl.Ciphering.SystemTitle != null && cl.Ciphering.SystemTitle.Length == 0)
                        {
                            cl.Ciphering.SystemTitle = null;
                        }
                        cl.Ciphering.BlockCipherKey = GXCommon.HexToBytes(dev.BlockCipherKey);
                        if (cl.Ciphering.BlockCipherKey != null && cl.Ciphering.BlockCipherKey.Length == 0)
                        {
                            cl.Ciphering.BlockCipherKey = null;
                        }
                        cl.Ciphering.AuthenticationKey = GXCommon.HexToBytes(dev.AuthenticationKey);
                        if (cl.Ciphering.AuthenticationKey != null && cl.Ciphering.AuthenticationKey.Length == 0)
                        {
                            cl.Ciphering.AuthenticationKey = null;
                        }
                        cl.ServerSystemTitle = GXCommon.HexToBytes(dev.DeviceSystemTitle);
                        if (cl.ServerSystemTitle != null && cl.ServerSystemTitle.Length == 0)
                        {
                            cl.ServerSystemTitle = null;
                        }
                        cl.Ciphering.InvocationCounter = dev.InvocationCounter;
                        cl.Ciphering.Security          = (Security)dev.Security;
                        reader = new GXDLMSReader(cl, media, _logger);
                        media.Open();
                        reader.InitializeConnection();
                        pos = 0;
                        int count = ret.Tasks.Length;
                        foreach (GXTask task in ret.Tasks)
                        {
                            ++pos;
                            try
                            {
                                GXDLMSObject obj = GXDLMSClient.CreateObject((ObjectType)task.Object.ObjectType);
                                obj.LogicalName = task.Object.LogicalName;
                                obj.ShortName   = task.Object.ShortName;
                                if (task.TaskType == TaskType.Write)
                                {
                                    if (obj.LogicalName == "0.0.1.1.0.255" && task.Index == 2)
                                    {
                                        cl.UpdateValue(obj, task.Index, GXDateTime.ToUnixTime(DateTime.UtcNow));
                                    }
                                    else
                                    {
                                        cl.UpdateValue(obj, task.Index, GXDLMSTranslator.XmlToValue(task.Data));
                                    }
                                    reader.Write(obj, task.Index);
                                }
                                else if (task.TaskType == TaskType.Action)
                                {
                                    reader.Method(obj, task.Index, GXDLMSTranslator.XmlToValue(task.Data), DataType.None);
                                }
                                else if (task.TaskType == TaskType.Read)
                                {
                                    //Reading the meter.
                                    if (task.Object.Attributes[0].DataType != 0)
                                    {
                                        obj.SetDataType(task.Index, (DataType)task.Object.Attributes[0].DataType);
                                    }
                                    if (task.Object.Attributes[0].UIDataType != 0)
                                    {
                                        obj.SetUIDataType(task.Index, (DataType)task.Object.Attributes[0].UIDataType);
                                    }
                                    Reader.Read(_logger, client, reader, task, media, obj);
                                    if (task.Object.Attributes[0].DataType == 0)
                                    {
                                        task.Object.Attributes[0].DataType = (int)obj.GetDataType(task.Index);
                                        if (task.Object.Attributes[0].UIDataType == 0)
                                        {
                                            task.Object.Attributes[0].UIDataType = (int)obj.GetUIDataType(task.Index);
                                        }
                                        UpdateDatatype u = new UpdateDatatype()
                                        {
                                            Items = new GXAttribute[] { task.Object.Attributes[0] }
                                        };
                                        response = client.PostAsJsonAsync(Startup.ServerAddress + "/api/Object/UpdateDatatype", u).Result;
                                        Helpers.CheckStatus(response);
                                    }
                                }
                            }
                            catch (Exception ex)
                            {
                                task.Result = ex.Message;
                                AddError error = new AddError();
                                error.Error = new GXError()
                                {
                                    DeviceId = dev.Id,
                                    Error    = "Failed to " + task.TaskType + " " + task.Object.LogicalName + ":" + task.Index + ". " + ex.Message
                                };
                                _logger.LogError(error.Error.Error);
                                using (response = await client.PostAsJsonAsync(Startup.ServerAddress + "/api/error/AddError", error))
                                {
                                    Helpers.CheckStatus(response);
                                    await response.Content.ReadAsAsync <AddErrorResponse>();
                                }
                            }
                            task.End = DateTime.Now;
                            //Close connection after last task is executed.
                            //This must done because there might be new task to execute.
                            if (count == pos)
                            {
                                try
                                {
                                    reader.Close();
                                }
                                catch (Exception ex)
                                {
                                    task.Result = ex.Message;
                                    AddError error = new AddError();
                                    error.Error = new GXError()
                                    {
                                        DeviceId = dev.Id,
                                        Error    = "Failed to close the connection. " + ex.Message
                                    };
                                    _logger.LogError(error.Error.Error);
                                    using (response = await client.PostAsJsonAsync(Startup.ServerAddress + "/api/error/AddError", error))
                                    {
                                        Helpers.CheckStatus(response);
                                        await response.Content.ReadAsAsync <AddErrorResponse>();
                                    }
                                }
                            }
                            //Update execution time.
                            response = client.PostAsJsonAsync(Startup.ServerAddress + "/api/task/TaskReady", new TaskReady()
                            {
                                Tasks = new GXTask[] { task }
                            }).Result;
                            Helpers.CheckStatus(response);
                        }
                    }
                    else
                    {
                        try
                        {
                            using (response = await client.PostAsJsonAsync(Startup.ServerAddress + "/api/task/WaitChange", new WaitChange()
                            {
                                Change = TargetType.Tasks, Time = lastUpdated, WaitTime = _waitTime
                            }))
                            {
                                Helpers.CheckStatus(response);
                                {
                                    WaitChangeResponse r = await response.Content.ReadAsAsync <WaitChangeResponse>();

                                    if (r.Time > lastUpdated)
                                    {
                                        lastUpdated = r.Time;
                                    }
                                }
                            }
                        }
                        catch (Exception ex)
                        {
                            if (!_cancellationToken.IsCancellationRequested)
                            {
                                break;
                            }
                            _cancellationToken.WaitHandle.WaitOne(TimeSpan.FromSeconds(10));
                        }
                    }
                }
                catch (Exception ex)
                {
                    //If app is closing.
                    if (_cancellationToken.IsCancellationRequested)
                    {
                        break;
                    }
                    if (ret == null)
                    {
                        _logger.LogError("Failed to connect to the DB server.");
                    }
                    else
                    {
                        AddError error = new AddError();
                        error.Error = new GXError()
                        {
                            DeviceId = ret.Tasks[0].Object.DeviceId,
                            Error    = "Failed to " + ret.Tasks[0].TaskType + " " + ret.Tasks[0].Object.LogicalName + ":" + ret.Tasks[0].Index + ". " + ex.Message
                        };
                        using (response = await client.PostAsJsonAsync(Startup.ServerAddress + "/api/error/AddError", error))
                        {
                            if (ret.Tasks != null)
                            {
                                DateTime now = DateTime.Now;
                                foreach (GXTask it in ret.Tasks)
                                {
                                    it.Result = ex.Message;
                                    it.End    = now;
                                }
                                response = await client.PostAsJsonAsync(Startup.ServerAddress + "/api/task/TaskReady", new TaskReady()
                                {
                                    Tasks = ret.Tasks
                                });
                            }
                        }
                    }
                    _logger.LogError(ex.Message);
                }
            }
        }