Optimize and improve code

https://github.com/2dust/v2rayN/issues/6800

v2rayN/ServiceLib/Global.cs

@@ -69,7 +69,7 @@ namespace ServiceLib
         public const int MinFontSize = 8;
         public const string RebootAs = "rebootas";
         public const string AvaAssets = "avares://v2rayN/Assets/";
-        public const string LocalAppData = "V2RAYN_LOCAL_APPLICATION_DATA";
+        public const string LocalAppData = "V2RAYN_LOCAL_APPLICATION_DATA_V2";
         public const string V2RayLocalAsset = "V2RAY_LOCATION_ASSET";
         public const string XrayLocalAsset = "XRAY_LOCATION_ASSET";
         public const int SpeedTestPageSize = 1000;

v2rayN/ServiceLib/Services/DownloadService.cs

@@ -1,4 +1,4 @@
-using System.Diagnostics;
+using System.Diagnostics;
 using System.Net;
 using System.Net.Http.Headers;
 using System.Net.Sockets;
@@ -222,20 +222,20 @@ namespace ServiceLib.Services
 
         public async Task<int> RunAvailabilityCheck(IWebProxy? webProxy)
         {
+            var responseTime = -1;
             try
             {
                 webProxy ??= await GetWebProxy(true);
+                var config = AppHandler.Instance.Config;
 
-                try
+                for (var i = 0; i < 2; i++)
                 {
-                    var config = AppHandler.Instance.Config;
-                    var responseTime = await GetRealPingTime(config.SpeedTestItem.SpeedPingTestUrl, webProxy, 10);
-                    return responseTime;
-                }
-                catch (Exception ex)
-                {
-                    Logging.SaveLog(_tag, ex);
-                    return -1;
+                    responseTime = await GetRealPingTime(config.SpeedTestItem.SpeedPingTestUrl, webProxy, 10);
+                    if (responseTime > 0)
+                    {
+                        break;
+                    }
+                    await Task.Delay(500);
                 }
             }
             catch (Exception ex)
@@ -243,6 +243,7 @@ namespace ServiceLib.Services
                 Logging.SaveLog(_tag, ex);
                 return -1;
             }
+            return responseTime;
         }
 
         public async Task<int> GetRealPingTime(string url, IWebProxy? webProxy, int downloadTimeout)
@@ -319,4 +320,4 @@ namespace ServiceLib.Services
             ServicePointManager.DefaultConnectionLimit = 256;
         }
     }
-}
+}

v2rayN/ServiceLib/ViewModels/GlobalHotkeySettingViewModel.cs

@@ -1,7 +1,5 @@
 using System.Reactive;
-using System.Text;
 using ReactiveUI;
-using ReactiveUI.Fody.Helpers;
 
 namespace ServiceLib.ViewModels
 {

v2rayN/ServiceLib/ViewModels/StatusBarViewModel.cs

@@ -316,6 +316,8 @@ namespace ServiceLib.ViewModels
                 return;
             }
 
+            _updateView?.Invoke(EViewAction.DispatcherServerAvailability, ResUI.Speedtesting);
+
             var msg = await (new UpdateService()).RunAvailabilityCheck();
 
             NoticeHandler.Instance.SendMessageEx(msg);

v2rayN/v2rayN.Desktop/Views/MainWindow.axaml.cs

@@ -247,7 +247,10 @@ namespace v2rayN.Desktop.Views
 
                 case EViewAction.AddServerViaClipboard:
                     var clipboardData = await AvaUtils.GetClipboardData(this);
-                    ViewModel?.AddServerViaClipboardAsync(clipboardData);
+                    if (ViewModel != null)
+                    {
+                        await ViewModel.AddServerViaClipboardAsync(clipboardData);
+                    }
                     break;
 
                 case EViewAction.AdjustMainLvColWidth:
@@ -294,7 +297,10 @@ namespace v2rayN.Desktop.Views
                     break;
 
                 case WindowCloseReason.ApplicationShutdown or WindowCloseReason.OSShutdown:
-                    await ViewModel?.MyAppExitAsync(true);
+                    if (ViewModel != null)
+                    {
+                        await ViewModel.MyAppExitAsync(true);
+                    }
                     break;
             }
 
@@ -309,7 +315,10 @@ namespace v2rayN.Desktop.Views
                 {
                     case Key.V:
                         var clipboardData = await AvaUtils.GetClipboardData(this);
-                        ViewModel?.AddServerViaClipboardAsync(clipboardData);
+                        if (ViewModel != null)
+                        {
+                            await ViewModel.AddServerViaClipboardAsync(clipboardData);
+                        }
                         break;
 
                     case Key.S:
@@ -358,7 +367,11 @@ namespace v2rayN.Desktop.Views
             {
                 return;
             }
-            await ViewModel?.ScanImageResult(fileName);
+
+            if (ViewModel != null)
+            {
+                await ViewModel.ScanImageResult(fileName);
+            }
         }
 
         private void MenuCheckUpdate_Click(object? sender, RoutedEventArgs e)
@@ -382,8 +395,10 @@ namespace v2rayN.Desktop.Views
 
             _blCloseByUser = true;
             StorageUI();
-
-            await ViewModel?.MyAppExitAsync(false);
+            if (ViewModel != null)
+            {
+                await ViewModel.MyAppExitAsync(false);
+            }
         }
 
         #endregion Event

v2rayN/v2rayN.Desktop/Views/OptionSettingWindow.axaml.cs

@@ -248,7 +248,10 @@ namespace v2rayN.Desktop.Views
 
         private void ClbdestOverride_SelectionChanged(object? sender, SelectionChangedEventArgs e)
         {
-            ViewModel.destOverride = clbdestOverride.SelectedItems.Cast<string>().ToList();
+            if (ViewModel != null)
+            {
+                ViewModel.destOverride = clbdestOverride.SelectedItems.Cast<string>().ToList();
+            }
         }
     }
 }

v2rayN/v2rayN.Desktop/Views/ProfilesView.axaml.cs

@@ -86,7 +86,7 @@ namespace v2rayN.Desktop.Views
                 this.BindCommand(ViewModel, vm => vm.SpeedServerCmd, v => v.menuSpeedServer).DisposeWith(disposables);
                 this.BindCommand(ViewModel, vm => vm.SortServerResultCmd, v => v.menuSortServerResult).DisposeWith(disposables);
                 this.BindCommand(ViewModel, vm => vm.RemoveInvalidServerResultCmd, v => v.menuRemoveInvalidServerResult).DisposeWith(disposables);
-                
+
                 //servers export
                 this.BindCommand(ViewModel, vm => vm.Export2ClientConfigCmd, v => v.menuExport2ClientConfig).DisposeWith(disposables);
                 this.BindCommand(ViewModel, vm => vm.Export2ClientConfigClipboardCmd, v => v.menuExport2ClientConfigClipboard).DisposeWith(disposables);
@@ -102,11 +102,16 @@ namespace v2rayN.Desktop.Views
         private async void LstProfiles_Sorting(object? sender, DataGridColumnEventArgs e)
         {
             e.Handled = true;
-            await ViewModel?.SortServer(e.Column.Tag.ToString());
+
+            if (ViewModel != null && e.Column?.Tag?.ToString() != null)
+            {
+                await ViewModel.SortServer(e.Column.Tag.ToString());
+            }
+
             e.Handled = false;
         }
 
-        //#region Event
+        #region Event
 
         private async Task<bool> UpdateViewHandler(EViewAction action, object? obj)
         {
@@ -179,7 +184,9 @@ namespace v2rayN.Desktop.Views
 
                 case EViewAction.DispatcherRefreshServersBiz:
                     Dispatcher.UIThread.Post(() =>
-                        ViewModel?.RefreshServersBiz(),
+                    {
+                        _ = RefreshServersBiz();
+                    },
                     DispatcherPriority.Default);
                     break;
             }
@@ -198,9 +205,25 @@ namespace v2rayN.Desktop.Views
             await DialogHost.Show(dialog);
         }
 
+        public async Task RefreshServersBiz()
+        {
+            if (ViewModel != null)
+            {
+                await ViewModel.RefreshServersBiz();
+            }
+
+            if (lstProfiles.SelectedIndex > 0)
+            {
+                lstProfiles.ScrollIntoView(lstProfiles.SelectedItem, null);
+            }
+        }
+
         private void lstProfiles_SelectionChanged(object? sender, SelectionChangedEventArgs e)
         {
-            ViewModel.SelectedProfiles = lstProfiles.SelectedItems.Cast<ProfileItemModel>().ToList();
+            if (ViewModel != null)
+            {
+                ViewModel.SelectedProfiles = lstProfiles.SelectedItems.Cast<ProfileItemModel>().ToList();
+            }
         }
 
         private void LstProfiles_DoubleTapped(object? sender, Avalonia.Input.TappedEventArgs e)
@@ -333,9 +356,9 @@ namespace v2rayN.Desktop.Views
             }
         }
 
-        //#endregion Event
+        #endregion Event
 
-        //#region UI
+        #region UI
 
         private void RestoreUI()
         {
@@ -388,9 +411,9 @@ namespace v2rayN.Desktop.Views
             _config.UiItem.MainColumnItem = lvColumnItem;
         }
 
-        //#endregion UI
+        #endregion UI
 
-        //#region Drag and Drop
+        #region Drag and Drop
 
         //private Point startPoint = new();
         //private int startIndex = -1;
@@ -480,6 +503,6 @@ namespace v2rayN.Desktop.Views
         //    }
         //}
 
-        //#endregion Drag and Drop
+        #endregion Drag and Drop
     }
 }

v2rayN/v2rayN.Desktop/Views/RoutingRuleDetailsWindow.axaml.cs

@@ -85,12 +85,18 @@ namespace v2rayN.Desktop.Views
 
         private void ClbProtocol_SelectionChanged(object? sender, SelectionChangedEventArgs e)
         {
-            ViewModel.ProtocolItems = clbProtocol.SelectedItems.Cast<string>().ToList();
+            if (ViewModel != null)
+            {
+                ViewModel.ProtocolItems = clbProtocol.SelectedItems.Cast<string>().ToList();
+            }
         }
 
         private void ClbInboundTag_SelectionChanged(object? sender, SelectionChangedEventArgs e)
         {
-            ViewModel.InboundTagItems = clbInboundTag.SelectedItems.Cast<string>().ToList();
+            if (ViewModel != null)
+            {
+                ViewModel.InboundTagItems = clbInboundTag.SelectedItems.Cast<string>().ToList();
+            }
         }
 
         private void linkRuleobjectDoc_Click(object? sender, RoutedEventArgs e)

v2rayN/v2rayN.Desktop/Views/RoutingRuleSettingWindow.axaml.cs

@@ -167,7 +167,10 @@ namespace v2rayN.Desktop.Views
 
         private void lstRules_SelectionChanged(object? sender, SelectionChangedEventArgs e)
         {
-            ViewModel.SelectedSources = lstRules.SelectedItems.Cast<RulesItemModel>().ToList();
+            if (ViewModel != null)
+            {
+                ViewModel.SelectedSources = lstRules.SelectedItems.Cast<RulesItemModel>().ToList();
+            }
         }
 
         private void LstRules_DoubleTapped(object? sender, Avalonia.Input.TappedEventArgs e)

v2rayN/v2rayN.Desktop/Views/RoutingSettingWindow.axaml.cs

@@ -108,7 +108,10 @@ namespace v2rayN.Desktop.Views
 
         private void lstRoutings_SelectionChanged(object? sender, SelectionChangedEventArgs e)
         {
-            ViewModel.SelectedSources = lstRoutings.SelectedItems.Cast<RoutingItemModel>().ToList();
+            if (ViewModel != null)
+            {
+                ViewModel.SelectedSources = lstRoutings.SelectedItems.Cast<RoutingItemModel>().ToList();
+            }
         }
 
         private void LstRoutings_DoubleTapped(object? sender, TappedEventArgs e)

v2rayN/v2rayN.Desktop/Views/SubSettingWindow.axaml.cs

@@ -84,7 +84,10 @@ namespace v2rayN.Desktop.Views
 
         private void LstSubscription_SelectionChanged(object? sender, SelectionChangedEventArgs e)
         {
-            ViewModel.SelectedSources = lstSubscription.SelectedItems.Cast<SubItem>().ToList();
+            if (ViewModel != null)
+            {
+                ViewModel.SelectedSources = lstSubscription.SelectedItems.Cast<SubItem>().ToList();
+            }
         }
 
         private void menuClose_Click(object? sender, RoutedEventArgs e)

v2rayN/v2rayN/Views/OptionSettingWindow.xaml.cs

@@ -259,7 +259,10 @@ namespace v2rayN.Views
 
         private void ClbdestOverride_SelectionChanged(object sender, System.Windows.Controls.SelectionChangedEventArgs e)
         {
-            ViewModel.destOverride = clbdestOverride.SelectedItems.Cast<string>().ToList();
+            if (ViewModel != null)
+            {
+                ViewModel.destOverride = clbdestOverride.SelectedItems.Cast<string>().ToList();
+            }
         }
     }
 }

v2rayN/v2rayN/Views/ProfilesView.xaml.cs

@@ -166,7 +166,7 @@ namespace v2rayN.Views
                 case EViewAction.DispatcherRefreshServersBiz:
                     Application.Current?.Dispatcher.Invoke((() =>
                     {
-                        ViewModel?.RefreshServersBiz();
+                        _ = RefreshServersBiz();
                     }), DispatcherPriority.Normal);
                     break;
             }
@@ -186,9 +186,25 @@ namespace v2rayN.Views
             await DialogHost.Show(dialog, "RootDialog");
         }
 
+        public async Task RefreshServersBiz()
+        {
+            if (ViewModel != null)
+            {
+                await ViewModel.RefreshServersBiz();
+            }
+
+            if (lstProfiles.SelectedIndex > 0)
+            {
+                lstProfiles.ScrollIntoView(lstProfiles.SelectedItem, null);
+            }
+        }
+
         private void lstProfiles_SelectionChanged(object sender, System.Windows.Controls.SelectionChangedEventArgs e)
         {
-            ViewModel.SelectedProfiles = lstProfiles.SelectedItems.Cast<ProfileItemModel>().ToList();
+            if (ViewModel != null)
+            {
+                ViewModel.SelectedProfiles = lstProfiles.SelectedItems.Cast<ProfileItemModel>().ToList();
+            }
         }
 
         private void LstProfiles_LoadingRow(object? sender, DataGridRowEventArgs e)

v2rayN/v2rayN/Views/RoutingRuleDetailsWindow.xaml.cs

@@ -79,12 +79,18 @@ namespace v2rayN.Views
 
         private void ClbProtocol_SelectionChanged(object sender, System.Windows.Controls.SelectionChangedEventArgs e)
         {
-            ViewModel.ProtocolItems = clbProtocol.SelectedItems.Cast<string>().ToList();
+            if (ViewModel != null)
+            {
+                ViewModel.ProtocolItems = clbProtocol.SelectedItems.Cast<string>().ToList();
+            }
         }
 
         private void ClbInboundTag_SelectionChanged(object sender, System.Windows.Controls.SelectionChangedEventArgs e)
         {
-            ViewModel.InboundTagItems = clbInboundTag.SelectedItems.Cast<string>().ToList();
+            if (ViewModel != null)
+            {
+                ViewModel.InboundTagItems = clbInboundTag.SelectedItems.Cast<string>().ToList();
+            }
         }
 
         private void linkRuleobjectDoc_Click(object sender, RoutedEventArgs e)

v2rayN/v2rayN/Views/RoutingRuleSettingWindow.xaml.cs

@@ -162,7 +162,10 @@ namespace v2rayN.Views
 
         private void lstRules_SelectionChanged(object sender, System.Windows.Controls.SelectionChangedEventArgs e)
         {
-            ViewModel.SelectedSources = lstRules.SelectedItems.Cast<RulesItemModel>().ToList();
+            if (ViewModel != null)
+            {
+                ViewModel.SelectedSources = lstRules.SelectedItems.Cast<RulesItemModel>().ToList();
+            }
         }
 
         private void LstRules_MouseDoubleClick(object sender, MouseButtonEventArgs e)

v2rayN/v2rayN/Views/RoutingSettingWindow.xaml.cs

@@ -113,7 +113,10 @@ namespace v2rayN.Views
 
         private void lstRoutings_SelectionChanged(object sender, System.Windows.Controls.SelectionChangedEventArgs e)
         {
-            ViewModel.SelectedSources = lstRoutings.SelectedItems.Cast<RoutingItemModel>().ToList();
+            if (ViewModel != null)
+            {
+                ViewModel.SelectedSources = lstRoutings.SelectedItems.Cast<RoutingItemModel>().ToList();
+            }
         }
 
         private void LstRoutings_MouseDoubleClick(object sender, MouseButtonEventArgs e)

v2rayN/v2rayN/Views/SubSettingWindow.xaml.cs

@@ -94,7 +94,10 @@ namespace v2rayN.Views
 
         private void LstSubscription_SelectionChanged(object sender, System.Windows.Controls.SelectionChangedEventArgs e)
         {
-            ViewModel.SelectedSources = lstSubscription.SelectedItems.Cast<SubItem>().ToList();
+            if (ViewModel != null)
+            {
+                ViewModel.SelectedSources = lstSubscription.SelectedItems.Cast<SubItem>().ToList();
+            }
         }
 
         private void menuClose_Click(object sender, System.Windows.RoutedEventArgs e)