Merge 2918cc92ac into 7329dbae11

https://github.com/2dust/v2rayN/issues/9016

v2rayN/Directory.Build.props

@@ -1,7 +1,7 @@
 <Project>
 
     <PropertyGroup>
-        <Version>7.19.5</Version>
+        <Version>7.20.1</Version>
     </PropertyGroup>
 
     <PropertyGroup>

v2rayN/Directory.Packages.props

@@ -6,11 +6,11 @@
   </PropertyGroup>
   <ItemGroup>
     <PackageVersion Include="Avalonia.AvaloniaEdit" Version="11.4.1" />
-    <PackageVersion Include="Avalonia.Controls.DataGrid" Version="11.3.12" />
-    <PackageVersion Include="Avalonia.Desktop" Version="11.3.12" />
-    <PackageVersion Include="Avalonia.Diagnostics" Version="11.3.12" />
+    <PackageVersion Include="Avalonia.Controls.DataGrid" Version="11.3.13" />
+    <PackageVersion Include="Avalonia.Desktop" Version="11.3.13" />
+    <PackageVersion Include="Avalonia.Diagnostics" Version="11.3.13" />
     <PackageVersion Include="ReactiveUI.Avalonia" Version="11.4.12" />
-    <PackageVersion Include="CliWrap" Version="3.10.0" />
+    <PackageVersion Include="CliWrap" Version="3.10.1" />
     <PackageVersion Include="Downloader" Version="5.1.0" />
     <PackageVersion Include="H.NotifyIcon.Wpf" Version="2.4.1" />
     <PackageVersion Include="MaterialDesignThemes" Version="5.3.1" />

v2rayN/ServiceLib/Handler/ConfigHandler.cs

@@ -92,6 +92,7 @@ public static class ConfigHandler
             EnableTun = false,
             Mtu = 9000,
             IcmpRouting = Global.TunIcmpRoutingPolicies.First(),
+            EnableLegacyProtect = false,
         };
         config.GuiItem ??= new();
         config.MsgUIItem ??= new();
@@ -1414,19 +1415,32 @@ public static class ConfigHandler
     /// <returns>A SOCKS profile item or null if not needed</returns>
     public static ProfileItem? GetPreSocksItem(Config config, ProfileItem node, ECoreType coreType)
     {
-        if (node.ConfigType != EConfigType.Custom || !(node.PreSocksPort > 0))
-        {
-            return null;
-        }
         ProfileItem? itemSocks = null;
-        var preCoreType = AppManager.Instance.RunningCoreType = config.TunModeItem.EnableTun ? ECoreType.sing_box : ECoreType.Xray;
-        itemSocks = new ProfileItem()
+        if (node.ConfigType != EConfigType.Custom
+            && coreType != ECoreType.sing_box
+            && config.TunModeItem.EnableTun
+            && config.TunModeItem.EnableLegacyProtect)
         {
-            CoreType = preCoreType,
-            ConfigType = EConfigType.SOCKS,
-            Address = Global.Loopback,
-            Port = node.PreSocksPort.Value,
-        };
+            itemSocks = new ProfileItem()
+            {
+                CoreType = ECoreType.sing_box,
+                ConfigType = EConfigType.SOCKS,
+                Address = Global.Loopback,
+                Port = AppManager.Instance.GetLocalPort(EInboundProtocol.socks)
+            };
+        }
+        else if (node.ConfigType == EConfigType.Custom
+            && node.PreSocksPort is > 0 and <= 65535)
+        {
+            var preCoreType = config.TunModeItem.EnableTun ? ECoreType.sing_box : ECoreType.Xray;
+            itemSocks = new ProfileItem()
+            {
+                CoreType = preCoreType,
+                ConfigType = EConfigType.SOCKS,
+                Address = Global.Loopback,
+                Port = node.PreSocksPort.Value,
+            };
+        }
         return itemSocks;
     }
 

v2rayN/ServiceLib/Manager/CertPemManager.cs

@@ -203,7 +203,7 @@ public class CertPemManager
     /// <summary>
     /// Get certificate in PEM format from a server with CA pinning validation
     /// </summary>
-    public async Task<(string?, string?)> GetCertPemAsync(string target, string serverName, int timeout = 4)
+    public async Task<(string?, string?)> GetCertPemAsync(string target, string serverName, int timeout = 4, bool allowInsecure = false)
     {
         try
         {
@@ -215,12 +215,14 @@ public class CertPemManager
             using var client = new TcpClient();
             await client.ConnectAsync(domain, port > 0 ? port : 443, cts.Token);
 
-            await using var ssl = new SslStream(client.GetStream(), false, ValidateServerCertificate);
+            var callback = new RemoteCertificateValidationCallback((sender, certificate, chain, sslPolicyErrors) =>
+                ValidateServerCertificate(sender, certificate, chain, sslPolicyErrors, allowInsecure));
+            await using var ssl = new SslStream(client.GetStream(), false, callback);
 
             var sslOptions = new SslClientAuthenticationOptions
             {
                 TargetHost = serverName,
-                RemoteCertificateValidationCallback = ValidateServerCertificate
+                RemoteCertificateValidationCallback = callback
             };
 
             await ssl.AuthenticateAsClientAsync(sslOptions, cts.Token);
@@ -249,7 +251,7 @@ public class CertPemManager
     /// <summary>
     /// Get certificate chain in PEM format from a server with CA pinning validation
     /// </summary>
-    public async Task<(List<string>, string?)> GetCertChainPemAsync(string target, string serverName, int timeout = 4)
+    public async Task<(List<string>, string?)> GetCertChainPemAsync(string target, string serverName, int timeout = 4, bool allowInsecure = false)
     {
         var pemList = new List<string>();
         try
@@ -262,12 +264,14 @@ public class CertPemManager
             using var client = new TcpClient();
             await client.ConnectAsync(domain, port > 0 ? port : 443, cts.Token);
 
-            await using var ssl = new SslStream(client.GetStream(), false, ValidateServerCertificate);
+            var callback = new RemoteCertificateValidationCallback((sender, certificate, chain, sslPolicyErrors) =>
+                ValidateServerCertificate(sender, certificate, chain, sslPolicyErrors, allowInsecure));
+            await using var ssl = new SslStream(client.GetStream(), false, callback);
 
             var sslOptions = new SslClientAuthenticationOptions
             {
                 TargetHost = serverName,
-                RemoteCertificateValidationCallback = ValidateServerCertificate
+                RemoteCertificateValidationCallback = callback
             };
 
             await ssl.AuthenticateAsClientAsync(sslOptions, cts.Token);
@@ -300,16 +304,23 @@ public class CertPemManager
     /// Validate server certificate with CA pinning
     /// </summary>
     private bool ValidateServerCertificate(
-        object sender,
+        object _,
         X509Certificate? certificate,
         X509Chain? chain,
-        SslPolicyErrors sslPolicyErrors)
+        SslPolicyErrors sslPolicyErrors,
+        bool allowInsecure)
     {
         if (certificate == null)
         {
             return false;
         }
 
+        // In insecure mode, accept any certificate so self-signed certs can be fetched.
+        if (allowInsecure)
+        {
+            return true;
+        }
+
         // Check certificate name mismatch
         if (sslPolicyErrors.HasFlag(SslPolicyErrors.RemoteCertificateNameMismatch))
         {

v2rayN/ServiceLib/Manager/CoreManager.cs

@@ -90,6 +90,9 @@ public class CoreManager
 
         await CoreStart(mainContext);
         await CoreStartPreService(preContext);
+
+        AppManager.Instance.RunningCoreType = preContext?.RunCoreType ?? mainContext.RunCoreType;
+
         if (_processService != null)
         {
             await UpdateFunc(true, $"{node.GetSummary()}");
@@ -172,7 +175,7 @@ public class CoreManager
     private async Task CoreStart(CoreConfigContext context)
     {
         var node = context.Node;
-        var coreType = AppManager.Instance.RunningCoreType = AppManager.Instance.GetCoreType(node, node.ConfigType);
+        var coreType = AppManager.Instance.GetCoreType(node, node.ConfigType);
         var coreInfo = CoreInfoManager.Instance.GetCoreInfo(coreType);
 
         var displayLog = node.ConfigType != EConfigType.Custom || node.DisplayLog;

v2rayN/ServiceLib/Models/ConfigItems.cs

@@ -145,6 +145,7 @@ public class TunModeItem
     public int Mtu { get; set; }
     public bool EnableIPv6Address { get; set; }
     public string IcmpRouting { get; set; }
+    public bool EnableLegacyProtect { get; set; }
 }
 
 [Serializable]

v2rayN/ServiceLib/Resx/ResUI.Designer.cs

@@ -2571,6 +2571,24 @@ namespace ServiceLib.Resx {
             }
         }
         
+        /// <summary>
+        ///   查找类似 Allow insecure cert fetch (self-signed) 的本地化字符串。
+        /// </summary>
+        public static string TbAllowInsecureCertFetch {
+            get {
+                return ResourceManager.GetString("TbAllowInsecureCertFetch", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   查找类似 Only for fetching self-signed certificates. This may expose you to MITM risks. 的本地化字符串。
+        /// </summary>
+        public static string TbAllowInsecureCertFetchTips {
+            get {
+                return ResourceManager.GetString("TbAllowInsecureCertFetchTips", resourceCulture);
+            }
+        }
+        
         /// <summary>
         ///   查找类似 ALPN 的本地化字符串。
         /// </summary>
@@ -3150,6 +3168,15 @@ namespace ServiceLib.Resx {
             }
         }
         
+        /// <summary>
+        ///   查找类似 Legacy TUN Protect 的本地化字符串。
+        /// </summary>
+        public static string TbLegacyProtect {
+            get {
+                return ResourceManager.GetString("TbLegacyProtect", resourceCulture);
+            }
+        }
+        
         /// <summary>
         ///   查找类似 Address (IPv4, IPv6) 的本地化字符串。
         /// </summary>

v2rayN/ServiceLib/Resx/ResUI.fa-Ir.resx

@@ -1695,4 +1695,13 @@ The "Get Certificate" action may fail if a self-signed certificate is used or if
   <data name="TbIcmpRoutingPolicy" xml:space="preserve">
     <value>ICMP routing policy</value>
   </data>
+  <data name="TbLegacyProtect" xml:space="preserve">
+    <value>Legacy TUN Protect</value>
+  </data>
+  <data name="TbAllowInsecureCertFetch" xml:space="preserve">
+    <value>Allow insecure cert fetch (self-signed)</value>
+  </data>
+  <data name="TbAllowInsecureCertFetchTips" xml:space="preserve">
+    <value>Only for fetching self-signed certificates. This may expose you to MITM risks.</value>
+  </data>
 </root>

v2rayN/ServiceLib/Resx/ResUI.fr.resx

@@ -1692,4 +1692,13 @@ The "Get Certificate" action may fail if a self-signed certificate is used or if
   <data name="TbIcmpRoutingPolicy" xml:space="preserve">
     <value>ICMP routing policy</value>
   </data>
+  <data name="TbLegacyProtect" xml:space="preserve">
+    <value>Legacy TUN Protect</value>
+  </data>
+  <data name="TbAllowInsecureCertFetch" xml:space="preserve">
+    <value>Allow insecure cert fetch (self-signed)</value>
+  </data>
+  <data name="TbAllowInsecureCertFetchTips" xml:space="preserve">
+    <value>Only for fetching self-signed certificates. This may expose you to MITM risks.</value>
+  </data>
 </root>

v2rayN/ServiceLib/Resx/ResUI.hu.resx

@@ -1695,4 +1695,13 @@ The "Get Certificate" action may fail if a self-signed certificate is used or if
   <data name="TbIcmpRoutingPolicy" xml:space="preserve">
     <value>ICMP routing policy</value>
   </data>
+  <data name="TbLegacyProtect" xml:space="preserve">
+    <value>Legacy TUN Protect</value>
+  </data>
+  <data name="TbAllowInsecureCertFetch" xml:space="preserve">
+    <value>Allow insecure cert fetch (self-signed)</value>
+  </data>
+  <data name="TbAllowInsecureCertFetchTips" xml:space="preserve">
+    <value>Only for fetching self-signed certificates. This may expose you to MITM risks.</value>
+  </data>
 </root>

v2rayN/ServiceLib/Resx/ResUI.resx

@@ -1695,4 +1695,13 @@ The "Get Certificate" action may fail if a self-signed certificate is used or if
   <data name="TbIcmpRoutingPolicy" xml:space="preserve">
     <value>ICMP routing policy</value>
   </data>
+  <data name="TbLegacyProtect" xml:space="preserve">
+    <value>Legacy TUN Protect</value>
+  </data>
+  <data name="TbAllowInsecureCertFetch" xml:space="preserve">
+    <value>Allow insecure cert fetch (self-signed)</value>
+  </data>
+  <data name="TbAllowInsecureCertFetchTips" xml:space="preserve">
+    <value>Only for fetching self-signed certificates. This may expose you to MITM risks.</value>
+  </data>
 </root>

v2rayN/ServiceLib/Resx/ResUI.ru.resx

@@ -1695,4 +1695,13 @@
   <data name="TbIcmpRoutingPolicy" xml:space="preserve">
     <value>ICMP routing policy</value>
   </data>
-</root>
+  <data name="TbLegacyProtect" xml:space="preserve">
+    <value>Legacy TUN Protect</value>
+  </data>
+  <data name="TbAllowInsecureCertFetch" xml:space="preserve">
+    <value>Allow insecure cert fetch (self-signed)</value>
+  </data>
+  <data name="TbAllowInsecureCertFetchTips" xml:space="preserve">
+    <value>Only for fetching self-signed certificates. This may expose you to MITM risks.</value>
+  </data>
+</root>

v2rayN/ServiceLib/Resx/ResUI.zh-Hans.resx

@@ -1692,4 +1692,13 @@
   <data name="TbIcmpRoutingPolicy" xml:space="preserve">
     <value>ICMP 路由策略</value>
   </data>
+  <data name="TbLegacyProtect" xml:space="preserve">
+    <value>旧版 TUN 保护</value>
+  </data>
+  <data name="TbAllowInsecureCertFetch" xml:space="preserve">
+    <value>允许不安全获取证书（自签名）</value>
+  </data>
+  <data name="TbAllowInsecureCertFetchTips" xml:space="preserve">
+    <value>仅用于抓取自签证书，存在中间人风险。</value>
+  </data>
 </root>

v2rayN/ServiceLib/Resx/ResUI.zh-Hant.resx

@@ -1692,4 +1692,13 @@
   <data name="TbIcmpRoutingPolicy" xml:space="preserve">
     <value>ICMP 路由策略</value>
   </data>
-</root>
+  <data name="TbLegacyProtect" xml:space="preserve">
+    <value>Legacy TUN Protect</value>
+  </data>
+  <data name="TbAllowInsecureCertFetch" xml:space="preserve">
+    <value>允許不安全獲取證書（自簽名）</value>
+  </data>
+  <data name="TbAllowInsecureCertFetchTips" xml:space="preserve">
+    <value>僅用於抓取自簽證書，存在中間人風險。</value>
+  </data>
+</root>

v2rayN/ServiceLib/Services/CoreConfig/Singbox/CoreConfigSingboxService.cs

@@ -61,7 +61,8 @@ public partial class CoreConfigSingboxService(CoreConfigContext context)
             ret.Success = true;
 
             ret.Data = ApplyFullConfigTemplate();
-            if (context.TunProtectSsPort is > 0 and <= 65535)
+            if (!context.AppConfig.TunModeItem.EnableLegacyProtect
+                && context.TunProtectSsPort is > 0 and <= 65535)
             {
                 var ssInbound = new
                 {

v2rayN/ServiceLib/Services/CoreConfig/Singbox/SingboxOutboundService.cs

@@ -22,7 +22,7 @@ public partial class CoreConfigSingboxService
         }
         if (withSelector)
         {
-            var proxyTags = proxyOutboundList.Where(n => n.tag.StartsWith(Global.ProxyTag)).Select(n => n.tag).ToList();
+            var proxyTags = proxyOutboundList.Where(n => n.tag.StartsWith(baseTagName)).Select(n => n.tag).ToList();
             if (proxyTags.Count > 1)
             {
                 proxyOutboundList.InsertRange(0, BuildSelectorOutbounds(proxyTags, baseTagName));

v2rayN/ServiceLib/Services/CoreConfig/V2ray/CoreConfigV2rayService.cs

@@ -15,7 +15,10 @@ public partial class CoreConfigV2rayService(CoreConfigContext context)
         var ret = new RetResult();
         try
         {
-            if (context.IsTunEnabled && context.TunProtectSsPort > 0 && context.ProxyRelaySsPort > 0)
+            if (!context.AppConfig.TunModeItem.EnableLegacyProtect
+                && context.IsTunEnabled
+                && context.TunProtectSsPort is > 0 and <= 65535
+                && context.ProxyRelaySsPort is > 0 and <= 65535)
             {
                 return GenerateClientProxyRelayConfig();
             }

v2rayN/ServiceLib/ViewModels/AddServerViewModel.cs

@@ -73,6 +73,9 @@ public class AddServerViewModel : MyReactiveObject
     [Reactive]
     public bool NaiveQuic { get; set; }
 
+    [Reactive]
+    public bool AllowInsecureCertFetch { get; set; }
+
     public ReactiveCommand<Unit, Unit> FetchCertCmd { get; }
     public ReactiveCommand<Unit, Unit> FetchCertChainCmd { get; }
     public ReactiveCommand<Unit, Unit> SaveCmd { get; }
@@ -272,7 +275,7 @@ public class AddServerViewModel : MyReactiveObject
             domain += $":{SelectedSource.Port}";
         }
 
-        (Cert, var certError) = await CertPemManager.Instance.GetCertPemAsync(domain, serverName);
+        (Cert, var certError) = await CertPemManager.Instance.GetCertPemAsync(domain, serverName, allowInsecure: AllowInsecureCertFetch);
         UpdateCertTip(certError);
     }
 
@@ -297,7 +300,7 @@ public class AddServerViewModel : MyReactiveObject
             domain += $":{SelectedSource.Port}";
         }
 
-        var (certs, certError) = await CertPemManager.Instance.GetCertChainPemAsync(domain, serverName);
+        var (certs, certError) = await CertPemManager.Instance.GetCertChainPemAsync(domain, serverName, allowInsecure: AllowInsecureCertFetch);
         Cert = CertPemManager.ConcatenatePemChain(certs);
         UpdateCertTip(certError);
     }

v2rayN/ServiceLib/ViewModels/OptionSettingViewModel.cs

@@ -96,6 +96,7 @@ public class OptionSettingViewModel : MyReactiveObject
     [Reactive] public int TunMtu { get; set; }
     [Reactive] public bool TunEnableIPv6Address { get; set; }
     [Reactive] public string TunIcmpRouting { get; set; }
+    [Reactive] public bool TunEnableLegacyProtect { get; set; }
 
     #endregion Tun mode
 
@@ -220,6 +221,7 @@ public class OptionSettingViewModel : MyReactiveObject
         TunMtu = _config.TunModeItem.Mtu;
         TunEnableIPv6Address = _config.TunModeItem.EnableIPv6Address;
         TunIcmpRouting = _config.TunModeItem.IcmpRouting;
+        TunEnableLegacyProtect = _config.TunModeItem.EnableLegacyProtect;
 
         #endregion Tun mode
 
@@ -379,6 +381,7 @@ public class OptionSettingViewModel : MyReactiveObject
         _config.TunModeItem.Mtu = TunMtu;
         _config.TunModeItem.EnableIPv6Address = TunEnableIPv6Address;
         _config.TunModeItem.IcmpRouting = TunIcmpRouting;
+        _config.TunModeItem.EnableLegacyProtect = TunEnableLegacyProtect;
 
         //coreType
         await SaveCoreType();

v2rayN/ServiceLib/ViewModels/ProfilesViewModel.cs

@@ -709,18 +709,22 @@ public class ProfilesViewModel : MyReactiveObject
 
     public async Task ServerSpeedtest(ESpeedActionType actionType)
     {
-        if (actionType == ESpeedActionType.Mixedtest)
+        List<ProfileItem>? lstSelected;
+        if (actionType is ESpeedActionType.Mixedtest or ESpeedActionType.FastRealping)
         {
-            SelectedProfiles = ProfileItems;
+            if (actionType == ESpeedActionType.FastRealping)
+            {
+                actionType = ESpeedActionType.Realping;
+            }
+
+            lstSelected = JsonUtils.Deserialize<List<ProfileItem>>(JsonUtils.Serialize(ProfileItems?.OrderBy(t => t.Sort)));
         }
-        else if (actionType == ESpeedActionType.FastRealping)
+        else
         {
-            SelectedProfiles = ProfileItems;
-            actionType = ESpeedActionType.Realping;
+            lstSelected = await GetProfileItems(false);
         }
 
-        var lstSelected = await GetProfileItems(false);
-        if (lstSelected == null)
+        if (lstSelected is null || lstSelected.Count <= 0)
         {
             return;
         }

v2rayN/v2rayN.Desktop/Views/AddServerWindow.axaml

@@ -1008,6 +1008,25 @@
                                                 Margin="{StaticResource Margin4}"
                                                 Content="{x:Static resx:ResUI.TbFetchCertChain}" />
                                         </StackPanel>
+                                        <StackPanel HorizontalAlignment="Left" Orientation="Horizontal">
+                                            <TextBlock
+                                                Margin="{StaticResource Margin4}"
+                                                VerticalAlignment="Center"
+                                                Text="{x:Static resx:ResUI.TbAllowInsecureCertFetch}" />
+                                            <ToggleSwitch
+                                                x:Name="togAllowInsecureCertFetch"
+                                                Margin="{StaticResource Margin4}"
+                                                HorizontalAlignment="Left" />
+                                        </StackPanel>
+                                        <TextBlock
+                                            x:Name="txtAllowInsecureCertFetchTips"
+                                            Width="400"
+                                            Margin="{StaticResource Margin4}"
+                                            VerticalAlignment="Center"
+                                            Foreground="#FFD32F2F"
+                                            IsVisible="False"
+                                            Text="{x:Static resx:ResUI.TbAllowInsecureCertFetchTips}"
+                                            TextWrapping="Wrap" />
                                         <TextBlock
                                             Width="400"
                                             Margin="{StaticResource Margin4}"

v2rayN/v2rayN.Desktop/Views/AddServerWindow.axaml.cs

@@ -214,6 +214,8 @@ public partial class AddServerWindow : WindowBase<AddServerViewModel>
             this.Bind(ViewModel, vm => vm.CertSha, v => v.txtCertSha256Pinning.Text).DisposeWith(disposables);
             this.Bind(ViewModel, vm => vm.CertTip, v => v.labCertPinning.Text).DisposeWith(disposables);
             this.Bind(ViewModel, vm => vm.Cert, v => v.txtCert.Text).DisposeWith(disposables);
+            this.Bind(ViewModel, vm => vm.AllowInsecureCertFetch, v => v.togAllowInsecureCertFetch.IsChecked).DisposeWith(disposables);
+            this.Bind(ViewModel, vm => vm.AllowInsecureCertFetch, v => v.txtAllowInsecureCertFetchTips.IsVisible).DisposeWith(disposables);
             this.Bind(ViewModel, vm => vm.SelectedSource.EchConfigList, v => v.txtEchConfigList.Text).DisposeWith(disposables);
             this.Bind(ViewModel, vm => vm.SelectedSource.EchForceQuery, v => v.cmbEchForceQuery.SelectedValue).DisposeWith(disposables);
 

v2rayN/v2rayN.Desktop/Views/OptionSettingWindow.axaml

@@ -768,7 +768,7 @@
                     Margin="{StaticResource Margin4}"
                     ColumnDefinitions="Auto,Auto,Auto"
                     DockPanel.Dock="Top"
-                    RowDefinitions="Auto,Auto,Auto,Auto,Auto,Auto,Auto,Auto,Auto">
+                    RowDefinitions="Auto,Auto,Auto,Auto,Auto,Auto,Auto,Auto,Auto,Auto">
 
                     <TextBlock
                         Grid.Row="2"
@@ -851,6 +851,18 @@
                         Margin="{StaticResource Margin4}"
                         HorizontalAlignment="Left" />
 
+                    <TextBlock
+                        Grid.Row="8"
+                        Grid.Column="0"
+                        Margin="{StaticResource Margin4}"
+                        VerticalAlignment="Center"
+                        Text="{x:Static resx:ResUI.TbLegacyProtect}" />
+                    <ToggleSwitch
+                        x:Name="togEnableLegacyProtect"
+                        Grid.Row="8"
+                        Grid.Column="1"
+                        Margin="{StaticResource Margin4}"
+                        HorizontalAlignment="Left" />
                 </Grid>
             </TabItem>
 

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

@@ -116,6 +116,7 @@ public partial class OptionSettingWindow : WindowBase<OptionSettingViewModel>
             this.Bind(ViewModel, vm => vm.TunMtu, v => v.cmbMtu.SelectedValue).DisposeWith(disposables);
             this.Bind(ViewModel, vm => vm.TunEnableIPv6Address, v => v.togEnableIPv6Address.IsChecked).DisposeWith(disposables);
             this.Bind(ViewModel, vm => vm.TunIcmpRouting, v => v.cmbIcmpRoutingPolicy.SelectedValue).DisposeWith(disposables);
+            this.Bind(ViewModel, vm => vm.TunEnableLegacyProtect, v => v.togEnableLegacyProtect.IsChecked).DisposeWith(disposables);
 
             this.Bind(ViewModel, vm => vm.CoreType1, v => v.cmbCoreType1.SelectedValue).DisposeWith(disposables);
             this.Bind(ViewModel, vm => vm.CoreType2, v => v.cmbCoreType2.SelectedValue).DisposeWith(disposables);

v2rayN/v2rayN/Views/AddServerWindow.xaml

@@ -1269,6 +1269,27 @@
                                         Content="{x:Static resx:ResUI.TbFetchCertChain}"
                                         Style="{StaticResource DefButton}" />
                                 </StackPanel>
+                                <StackPanel HorizontalAlignment="Left" Orientation="Horizontal">
+                                    <TextBlock
+                                        Margin="{StaticResource Margin4}"
+                                        VerticalAlignment="Center"
+                                        Style="{StaticResource ToolbarTextBlock}"
+                                        Text="{x:Static resx:ResUI.TbAllowInsecureCertFetch}" />
+                                    <ToggleButton
+                                        x:Name="togAllowInsecureCertFetch"
+                                        Margin="{StaticResource Margin4}"
+                                        HorizontalAlignment="Left" />
+                                </StackPanel>
+                                <TextBlock
+                                    x:Name="txtAllowInsecureCertFetchTips"
+                                    Width="400"
+                                    Margin="{StaticResource Margin4}"
+                                    VerticalAlignment="Center"
+                                    Foreground="#FFD32F2F"
+                                    Style="{StaticResource ToolbarTextBlock}"
+                                    Text="{x:Static resx:ResUI.TbAllowInsecureCertFetchTips}"
+                                    TextWrapping="Wrap"
+                                    Visibility="Collapsed" />
                                 <TextBlock
                                     Width="400"
                                     Margin="{StaticResource Margin4}"

v2rayN/v2rayN/Views/AddServerWindow.xaml.cs

@@ -208,6 +208,10 @@ public partial class AddServerWindow
             this.Bind(ViewModel, vm => vm.CertSha, v => v.txtCertSha256Pinning.Text).DisposeWith(disposables);
             this.Bind(ViewModel, vm => vm.CertTip, v => v.labCertPinning.Text).DisposeWith(disposables);
             this.Bind(ViewModel, vm => vm.Cert, v => v.txtCert.Text).DisposeWith(disposables);
+            this.Bind(ViewModel, vm => vm.AllowInsecureCertFetch, v => v.togAllowInsecureCertFetch.IsChecked).DisposeWith(disposables);
+            this.WhenAnyValue(x => x.ViewModel.AllowInsecureCertFetch)
+                .Select(b => b ? Visibility.Visible : Visibility.Collapsed)
+                .BindTo(this, v => v.txtAllowInsecureCertFetchTips.Visibility);
             this.Bind(ViewModel, vm => vm.Cert, v => v.txtCert.Text).DisposeWith(disposables);
             this.Bind(ViewModel, vm => vm.SelectedSource.EchConfigList, v => v.txtEchConfigList.Text).DisposeWith(disposables);
             this.Bind(ViewModel, vm => vm.SelectedSource.EchForceQuery, v => v.cmbEchForceQuery.Text).DisposeWith(disposables);

v2rayN/v2rayN/Views/OptionSettingWindow.xaml

@@ -1009,6 +1009,7 @@
                         <RowDefinition Height="Auto" />
                         <RowDefinition Height="Auto" />
                         <RowDefinition Height="Auto" />
+                        <RowDefinition Height="Auto" />
                     </Grid.RowDefinitions>
                     <Grid.ColumnDefinitions>
                         <ColumnDefinition Width="Auto" />
@@ -1105,6 +1106,20 @@
                         Grid.Column="1"
                         Margin="{StaticResource Margin8}"
                         HorizontalAlignment="Left" />
+
+                    <TextBlock
+                        Grid.Row="8"
+                        Grid.Column="0"
+                        Margin="{StaticResource Margin8}"
+                        VerticalAlignment="Center"
+                        Style="{StaticResource ToolbarTextBlock}"
+                        Text="{x:Static resx:ResUI.TbLegacyProtect}" />
+                    <ToggleButton
+                        x:Name="togEnableLegacyProtect"
+                        Grid.Row="8"
+                        Grid.Column="1"
+                        Margin="{StaticResource Margin8}"
+                        HorizontalAlignment="Left" />
                 </Grid>
             </TabItem>
 

v2rayN/v2rayN/Views/OptionSettingWindow.xaml.cs

@@ -121,6 +121,7 @@ public partial class OptionSettingWindow
             this.Bind(ViewModel, vm => vm.TunMtu, v => v.cmbMtu.Text).DisposeWith(disposables);
             this.Bind(ViewModel, vm => vm.TunEnableIPv6Address, v => v.togEnableIPv6Address.IsChecked).DisposeWith(disposables);
             this.Bind(ViewModel, vm => vm.TunIcmpRouting, v => v.cmbIcmpRoutingPolicy.Text).DisposeWith(disposables);
+            this.Bind(ViewModel, vm => vm.TunEnableLegacyProtect, v => v.togEnableLegacyProtect.IsChecked).DisposeWith(disposables);
 
             this.Bind(ViewModel, vm => vm.CoreType1, v => v.cmbCoreType1.Text).DisposeWith(disposables);
             this.Bind(ViewModel, vm => vm.CoreType2, v => v.cmbCoreType2.Text).DisposeWith(disposables);