Adjust chained proxy, actual outbound is at the top

Based on actual network flow instead of data packets

v2rayN/Directory.Build.props

@@ -1,7 +1,7 @@
 <Project>
 
     <PropertyGroup>
-        <Version>7.14.10</Version>
+        <Version>7.14.12</Version>
     </PropertyGroup>
 
     <PropertyGroup>

v2rayN/Directory.Packages.props

@@ -18,8 +18,8 @@
     <PackageVersion Include="ReactiveUI" Version="20.4.1" />
     <PackageVersion Include="ReactiveUI.Fody" Version="19.5.41" />
     <PackageVersion Include="ReactiveUI.WPF" Version="20.4.1" />
-    <PackageVersion Include="Semi.Avalonia" Version="11.2.1.9" />
-    <PackageVersion Include="Semi.Avalonia.DataGrid" Version="11.2.1.9" />
+    <PackageVersion Include="Semi.Avalonia" Version="11.2.1.10" />
+    <PackageVersion Include="Semi.Avalonia.DataGrid" Version="11.2.1.10" />
     <PackageVersion Include="Splat.NLog" Version="16.2.1" />
     <PackageVersion Include="sqlite-net-pcl" Version="1.9.172" />
     <PackageVersion Include="TaskScheduler" Version="2.12.2" />

v2rayN/ServiceLib/Common/QRCodeUtils.cs

@@ -1,4 +1,5 @@
 using QRCoder;
+using QRCoder.Exceptions;
 using SkiaSharp;
 using ZXing.SkiaSharp;
 
@@ -8,10 +9,45 @@ public class QRCodeUtils
 {
     public static byte[]? GenQRCode(string? url)
     {
+        if (url.IsNullOrEmpty())
+        {
+            return null;
+        }
         using QRCodeGenerator qrGenerator = new();
-        using var qrCodeData = qrGenerator.CreateQrCode(url ?? string.Empty, QRCodeGenerator.ECCLevel.Q);
-        using PngByteQRCode qrCode = new(qrCodeData);
-        return qrCode.GetGraphic(20);
+        DataTooLongException? lastDtle = null;
+
+        var levels = new[]
+        {
+            QRCodeGenerator.ECCLevel.H,
+            QRCodeGenerator.ECCLevel.Q,
+            QRCodeGenerator.ECCLevel.M,
+            QRCodeGenerator.ECCLevel.L
+        };
+        foreach (var level in levels)
+        {
+            try
+            {
+                using var qrCodeData = qrGenerator.CreateQrCode(url, level);
+                using PngByteQRCode qrCode = new(qrCodeData);
+                return qrCode.GetGraphic(20);
+            }
+            catch (DataTooLongException ex)
+            {
+                lastDtle = ex;
+                continue;
+            }
+            catch
+            {
+                throw;
+            }
+        }
+
+        if (lastDtle != null)
+        {
+            throw lastDtle;
+        }
+
+        return null;
     }
 
     public static string? ParseBarcode(string? fileName)

v2rayN/ServiceLib/Enums/EConfigType.cs

@@ -12,5 +12,9 @@ public enum EConfigType
     TUIC = 8,
     WireGuard = 9,
     HTTP = 10,
-    Anytls = 11
+    Anytls = 11,
+
+    Group = 1000,
+    PolicyGroup = 1001,
+    ProxyChain = 1002,
 }

v2rayN/ServiceLib/Enums/EMultipleLoad.cs

@@ -2,8 +2,9 @@ namespace ServiceLib.Enums;
 
 public enum EMultipleLoad
 {
+    LeastPing,
+    Fallback,
     Random,
     RoundRobin,
-    LeastPing,
     LeastLoad
 }

v2rayN/ServiceLib/Enums/EViewAction.cs

@@ -24,6 +24,7 @@ public enum EViewAction
     RoutingRuleDetailsWindow,
     AddServerWindow,
     AddServer2Window,
+    AddGroupServerWindow,
     DNSSettingWindow,
     RoutingSettingWindow,
     OptionSettingWindow,

v2rayN/ServiceLib/Global.cs

@@ -50,6 +50,7 @@ public class Global
     public const string DirectTag = "direct";
     public const string BlockTag = "block";
     public const string DnsTag = "dns-module";
+    public const string BalancerTagSuffix = "-round";
     public const string StreamSecurity = "tls";
     public const string StreamSecurityReality = "reality";
     public const string Loopback = "127.0.0.1";
@@ -598,6 +599,7 @@ public class Global
             { "cloudflare-dns.com", new List<string> { "104.16.249.249", "104.16.248.249", "2606:4700::6810:f8f9", "2606:4700::6810:f9f9" } },
             { "dns.cloudflare.com", new List<string> { "104.16.132.229", "104.16.133.229", "2606:4700::6810:84e5", "2606:4700::6810:85e5" } },
             { "dot.pub", new List<string> { "1.12.12.12", "120.53.53.53" } },
+            { "doh.pub", new List<string> { "1.12.12.12", "120.53.53.53" } },
             { "dns.quad9.net", new List<string> { "9.9.9.9", "149.112.112.112", "2620:fe::fe", "2620:fe::9" } },
             { "dns.yandex.net", new List<string> { "77.88.8.8", "77.88.8.1", "2a02:6b8::feed:0ff", "2a02:6b8:0:1::feed:0ff" } },
             { "dns.sb", new List<string> { "185.222.222.222", "2a09::" } },

v2rayN/ServiceLib/Handler/ConfigHandler.cs

@@ -357,6 +357,11 @@ public static class ConfigHandler
                 {
                 }
             }
+            else if (profileItem.ConfigType > EConfigType.Group)
+            {
+                var profileGroupItem = await AppManager.Instance.GetProfileGroupItem(it.IndexId);
+                await AddGroupServerCommon(config, profileItem, profileGroupItem, true);
+            }
             else
             {
                 await AddServerCommon(config, profileItem, true);
@@ -1074,6 +1079,35 @@ public static class ConfigHandler
         return 0;
     }
 
+    public static async Task<int> AddGroupServerCommon(Config config, ProfileItem profileItem, ProfileGroupItem profileGroupItem, bool toFile = true)
+    {
+        var maxSort = -1;
+        if (profileItem.IndexId.IsNullOrEmpty())
+        {
+            profileItem.IndexId = Utils.GetGuid(false);
+            maxSort = ProfileExManager.Instance.GetMaxSort();
+        }
+        if (maxSort > 0)
+        {
+            ProfileExManager.Instance.SetSort(profileItem.IndexId, maxSort + 1);
+        }
+        if (toFile)
+        {
+            await SQLiteHelper.Instance.ReplaceAsync(profileItem);
+            if (profileGroupItem != null)
+            {
+                profileGroupItem.ParentIndexId = profileItem.IndexId;
+                await ProfileGroupItemManager.Instance.SaveItemAsync(profileGroupItem);
+            }
+            else
+            {
+                ProfileGroupItemManager.Instance.GetOrCreateAndMarkDirty(profileItem.IndexId);
+                await ProfileGroupItemManager.Instance.SaveTo();
+            }
+        }
+        return 0;
+    }
+
     /// <summary>
     /// Compare two profile items to determine if they represent the same server
     /// Used for deduplication and server matching
@@ -1145,7 +1179,7 @@ public static class ConfigHandler
     }
 
     /// <summary>
-    /// Create a custom server that combines multiple servers for load balancing
+    /// Create a group server that combines multiple servers for load balancing
     /// Generates a configuration file that references multiple servers
     /// </summary>
     /// <param name="config">Current configuration</param>
@@ -1153,45 +1187,55 @@ public static class ConfigHandler
     /// <param name="coreType">Core type to use (Xray or sing_box)</param>
     /// <param name="multipleLoad">Load balancing algorithm</param>
     /// <returns>Result object with success state and data</returns>
-    public static async Task<RetResult> AddCustomServer4Multiple(Config config, List<ProfileItem> selecteds, ECoreType coreType, EMultipleLoad multipleLoad)
+    public static async Task<RetResult> AddGroupServer4Multiple(Config config, List<ProfileItem> selecteds, ECoreType coreType, EMultipleLoad multipleLoad, string? subId)
     {
-        var indexId = Utils.GetMd5(Global.CoreMultipleLoadConfigFileName);
-        var configPath = Utils.GetConfigPath(Global.CoreMultipleLoadConfigFileName);
+        var result = new RetResult();
 
-        var result = await CoreConfigHandler.GenerateClientMultipleLoadConfig(config, configPath, selecteds, coreType, multipleLoad);
-        if (result.Success != true)
-        {
-            return result;
-        }
+        var indexId = Utils.GetGuid(false);
+        var childProfileIndexId = Utils.List2String(selecteds.Select(p => p.IndexId).ToList());
 
-        if (!File.Exists(configPath))
-        {
-            return result;
-        }
-
-        var profileItem = await AppManager.Instance.GetProfileItem(indexId) ?? new();
-        profileItem.IndexId = indexId;
+        var remark = string.Empty;
         if (coreType == ECoreType.Xray)
         {
-            profileItem.Remarks = multipleLoad switch
+            remark = multipleLoad switch
             {
-                EMultipleLoad.Random => ResUI.menuSetDefaultMultipleServerXrayRandom,
-                EMultipleLoad.RoundRobin => ResUI.menuSetDefaultMultipleServerXrayRoundRobin,
-                EMultipleLoad.LeastPing => ResUI.menuSetDefaultMultipleServerXrayLeastPing,
-                EMultipleLoad.LeastLoad => ResUI.menuSetDefaultMultipleServerXrayLeastLoad,
-                _ => ResUI.menuSetDefaultMultipleServerXrayRoundRobin,
+                EMultipleLoad.LeastPing => ResUI.menuGenGroupMultipleServerXrayLeastPing,
+                EMultipleLoad.Fallback => ResUI.menuGenGroupMultipleServerXrayFallback,
+                EMultipleLoad.Random => ResUI.menuGenGroupMultipleServerXrayRandom,
+                EMultipleLoad.RoundRobin => ResUI.menuGenGroupMultipleServerXrayRoundRobin,
+                EMultipleLoad.LeastLoad => ResUI.menuGenGroupMultipleServerXrayLeastLoad,
+                _ => ResUI.menuGenGroupMultipleServerXrayRoundRobin,
             };
         }
         else if (coreType == ECoreType.sing_box)
         {
-            profileItem.Remarks = ResUI.menuSetDefaultMultipleServerSingBoxLeastPing;
+            remark = multipleLoad switch
+            {
+                EMultipleLoad.LeastPing => ResUI.menuGenGroupMultipleServerSingBoxLeastPing,
+                EMultipleLoad.Fallback => ResUI.menuGenGroupMultipleServerSingBoxFallback,
+                _ => ResUI.menuGenGroupMultipleServerSingBoxLeastPing,
+            };
         }
-        profileItem.Address = Global.CoreMultipleLoadConfigFileName;
-        profileItem.ConfigType = EConfigType.Custom;
-        profileItem.CoreType = coreType;
-
-        await AddServerCommon(config, profileItem, true);
-
+        var profile = new ProfileItem
+        {
+            IndexId = indexId,
+            CoreType = coreType,
+            ConfigType = EConfigType.PolicyGroup,
+            Remarks = remark,
+            Address = childProfileIndexId,
+        };
+        if (!subId.IsNullOrEmpty())
+        {
+            profile.Subid = subId;
+        }
+        var profileGroup = new ProfileGroupItem
+        {
+            ChildItems = childProfileIndexId,
+            MultipleLoad = multipleLoad,
+            ParentIndexId = indexId,
+        };
+        var ret = await AddGroupServerCommon(config, profile, profileGroup, true);
+        result.Success = ret == 0;
         result.Data = indexId;
         return result;
     }
@@ -1207,18 +1251,18 @@ public static class ConfigHandler
     public static async Task<ProfileItem?> GetPreSocksItem(Config config, ProfileItem node, ECoreType coreType)
     {
         ProfileItem? itemSocks = null;
-        if (node.ConfigType != EConfigType.Custom && coreType != ECoreType.sing_box && config.TunModeItem.EnableTun)
+        if (node.ConfigType != EConfigType.Custom && node.ConfigType < EConfigType.Group && coreType != ECoreType.sing_box && config.TunModeItem.EnableTun)
         {
             itemSocks = new ProfileItem()
             {
                 CoreType = ECoreType.sing_box,
                 ConfigType = EConfigType.SOCKS,
                 Address = Global.Loopback,
-                Sni = node.Address, //Tun2SocksAddress
+                SpiderX = node.Address, // Tun2SocksAddress
                 Port = AppManager.Instance.GetLocalPort(EInboundProtocol.socks)
             };
         }
-        else if ((node.ConfigType == EConfigType.Custom && node.PreSocksPort > 0))
+        else if (node.ConfigType == EConfigType.Custom && node.ConfigType < EConfigType.Group && node.PreSocksPort > 0)
         {
             var preCoreType = config.RunningCoreType = config.TunModeItem.EnableTun ? ECoreType.sing_box : ECoreType.Xray;
             itemSocks = new ProfileItem()

v2rayN/ServiceLib/Handler/CoreConfigHandler.cs

@@ -132,24 +132,4 @@ public static class CoreConfigHandler
         await File.WriteAllTextAsync(fileName, result.Data.ToString());
         return result;
     }
-
-    public static async Task<RetResult> GenerateClientMultipleLoadConfig(Config config, string fileName, List<ProfileItem> selecteds, ECoreType coreType, EMultipleLoad multipleLoad)
-    {
-        var result = new RetResult();
-        if (coreType == ECoreType.sing_box)
-        {
-            result = await new CoreConfigSingboxService(config).GenerateClientMultipleLoadConfig(selecteds);
-        }
-        else
-        {
-            result = await new CoreConfigV2rayService(config).GenerateClientMultipleLoadConfig(selecteds, multipleLoad);
-        }
-
-        if (result.Success != true)
-        {
-            return result;
-        }
-        await File.WriteAllTextAsync(fileName, result.Data.ToString());
-        return result;
-    }
 }

v2rayN/ServiceLib/Manager/AppManager.cs

@@ -67,6 +67,7 @@ public sealed class AppManager
         SQLiteHelper.Instance.CreateTable<ProfileExItem>();
         SQLiteHelper.Instance.CreateTable<DNSItem>();
         SQLiteHelper.Instance.CreateTable<FullConfigTemplateItem>();
+        SQLiteHelper.Instance.CreateTable<ProfileGroupItem>();
         return true;
     }
 
@@ -101,6 +102,7 @@ public sealed class AppManager
 
             await ConfigHandler.SaveConfig(_config);
             await ProfileExManager.Instance.SaveTo();
+            await ProfileGroupItemManager.Instance.SaveTo();
             await StatisticsManager.Instance.SaveTo();
             await CoreManager.Instance.CoreStop();
             StatisticsManager.Instance.Close();
@@ -219,6 +221,15 @@ public sealed class AppManager
         return await SQLiteHelper.Instance.TableAsync<ProfileItem>().FirstOrDefaultAsync(it => it.Remarks == remarks);
     }
 
+    public async Task<ProfileGroupItem?> GetProfileGroupItem(string parentIndexId)
+    {
+        if (parentIndexId.IsNullOrEmpty())
+        {
+            return null;
+        }
+        return await SQLiteHelper.Instance.TableAsync<ProfileGroupItem>().FirstOrDefaultAsync(it => it.ParentIndexId == parentIndexId);
+    }
+
     public async Task<List<RoutingItem>?> RoutingItems()
     {
         return await SQLiteHelper.Instance.TableAsync<RoutingItem>().OrderBy(t => t.Sort).ToListAsync();

v2rayN/ServiceLib/Manager/ProfileGroupItemManager.cs

@@ -0,0 +1,167 @@
+using System.Collections.Concurrent;
+
+namespace ServiceLib.Manager;
+
+public class ProfileGroupItemManager
+{
+    private static readonly Lazy<ProfileGroupItemManager> _instance = new(() => new());
+    private ConcurrentDictionary<string, ProfileGroupItem> _items = new();
+
+    public static ProfileGroupItemManager Instance => _instance.Value;
+    private static readonly string _tag = "ProfileGroupItemManager";
+
+    private ProfileGroupItemManager()
+    {
+    }
+
+    public async Task Init()
+    {
+        await InitData();
+    }
+
+    // Read-only getters: do not create or mark dirty
+    public bool TryGet(string indexId, out ProfileGroupItem? item)
+    {
+        item = null;
+        if (string.IsNullOrWhiteSpace(indexId))
+        {
+            return false;
+        }
+
+        return _items.TryGetValue(indexId, out item);
+    }
+
+    public ProfileGroupItem? GetOrDefault(string indexId)
+    {
+        return string.IsNullOrWhiteSpace(indexId) ? null : (_items.TryGetValue(indexId, out var v) ? v : null);
+    }
+
+    private async Task InitData()
+    {
+        await SQLiteHelper.Instance.ExecuteAsync($"delete from ProfileGroupItem where parentIndexId not in ( select indexId from ProfileItem )");
+
+        var list = await SQLiteHelper.Instance.TableAsync<ProfileGroupItem>().ToListAsync();
+        _items = new ConcurrentDictionary<string, ProfileGroupItem>(list.Where(t => !string.IsNullOrEmpty(t.ParentIndexId)).ToDictionary(t => t.ParentIndexId!));
+    }
+
+    private ProfileGroupItem AddProfileGroupItem(string indexId)
+    {
+        var profileGroupItem = new ProfileGroupItem()
+        {
+            ParentIndexId = indexId,
+            ChildItems = string.Empty,
+            MultipleLoad = EMultipleLoad.LeastPing
+        };
+
+        _items[indexId] = profileGroupItem;
+        return profileGroupItem;
+    }
+
+    private ProfileGroupItem GetProfileGroupItem(string indexId)
+    {
+        if (string.IsNullOrEmpty(indexId))
+        {
+            indexId = Utils.GetGuid(false);
+        }
+
+        return _items.GetOrAdd(indexId, AddProfileGroupItem);
+    }
+
+    public async Task ClearAll()
+    {
+        await SQLiteHelper.Instance.ExecuteAsync($"delete from ProfileGroupItem ");
+        _items.Clear();
+    }
+
+    public async Task SaveTo()
+    {
+        try
+        {
+            var lstExists = await SQLiteHelper.Instance.TableAsync<ProfileGroupItem>().ToListAsync();
+            var existsMap = lstExists.Where(t => !string.IsNullOrEmpty(t.ParentIndexId)).ToDictionary(t => t.ParentIndexId!);
+
+            var lstInserts = new List<ProfileGroupItem>();
+            var lstUpdates = new List<ProfileGroupItem>();
+
+            foreach (var item in _items.Values)
+            {
+                if (string.IsNullOrEmpty(item.ParentIndexId))
+                {
+                    continue;
+                }
+
+                if (existsMap.ContainsKey(item.ParentIndexId))
+                {
+                    lstUpdates.Add(item);
+                }
+                else
+                {
+                    lstInserts.Add(item);
+                }
+            }
+
+            try
+            {
+                if (lstInserts.Count > 0)
+                {
+                    await SQLiteHelper.Instance.InsertAllAsync(lstInserts);
+                }
+
+                if (lstUpdates.Count > 0)
+                {
+                    await SQLiteHelper.Instance.UpdateAllAsync(lstUpdates);
+                }
+            }
+            catch (Exception ex)
+            {
+                Logging.SaveLog(_tag, ex);
+            }
+        }
+        catch (Exception ex)
+        {
+            Logging.SaveLog(_tag, ex);
+        }
+    }
+
+    public ProfileGroupItem GetOrCreateAndMarkDirty(string indexId)
+    {
+        return GetProfileGroupItem(indexId);
+    }
+
+    public async ValueTask DisposeAsync()
+    {
+        await SaveTo();
+    }
+
+    public async Task SaveItemAsync(ProfileGroupItem item)
+    {
+        if (item is null)
+        {
+            throw new ArgumentNullException(nameof(item));
+        }
+
+        if (string.IsNullOrWhiteSpace(item.ParentIndexId))
+        {
+            throw new ArgumentException("ParentIndexId required", nameof(item));
+        }
+
+        _items[item.ParentIndexId] = item;
+
+        try
+        {
+            var lst = await SQLiteHelper.Instance.TableAsync<ProfileGroupItem>().Where(t => t.ParentIndexId == item.ParentIndexId).ToListAsync();
+            if (lst != null && lst.Count > 0)
+            {
+                await SQLiteHelper.Instance.UpdateAllAsync(new List<ProfileGroupItem> { item });
+            }
+            else
+            {
+                await SQLiteHelper.Instance.InsertAllAsync(new List<ProfileGroupItem> { item });
+            }
+        }
+        catch (Exception ex)
+        {
+            Logging.SaveLog(_tag, ex);
+        }
+    }
+}

v2rayN/ServiceLib/Manager/TaskManager.cs

@@ -35,6 +35,7 @@ public class TaskManager
 
                 await ConfigHandler.SaveConfig(_config);
                 await ProfileExManager.Instance.SaveTo();
+                await ProfileGroupItemManager.Instance.SaveTo();
             }
 
             //Execute once 1 hour

v2rayN/ServiceLib/Models/ProfileGroupItem.cs

@@ -0,0 +1,13 @@
+using SQLite;
+namespace ServiceLib.Models;
+
+[Serializable]
+public class ProfileGroupItem
+{
+    [PrimaryKey]
+    public string ParentIndexId { get; set; }
+
+    public string ChildItems { get; set; }
+
+    public EMultipleLoad MultipleLoad { get; set; } = EMultipleLoad.LeastPing;
+}

v2rayN/ServiceLib/Models/ProfileItem.cs

@@ -39,11 +39,14 @@ public class ProfileItem : ReactiveObject
             > 1 => $"***{arrAddr.Last()}",
             _ => Address
         };
-        summary += ConfigType switch
+        if (ConfigType is EConfigType.Custom or > EConfigType.Group)
         {
-            EConfigType.Custom => $"[{CoreType.ToString()}]{Remarks}",
-            _ => $"{Remarks}({addr}:{Port})"
-        };
+            summary += $"[{CoreType.ToString()}]{Remarks}";
+        }
+        else
+        {
+            summary += $"{Remarks}({addr}:{Port})";
+        }
         return summary;
     }
 

v2rayN/ServiceLib/Models/SingboxConfig.cs

@@ -145,6 +145,7 @@ public class Outbound4Sbox : BaseServer4Sbox
     public string? plugin_opts { get; set; }
     public List<string>? outbounds { get; set; }
     public bool? interrupt_exist_connections { get; set; }
+    public int? tolerance { get; set; }
 }
 
 public class Endpoints4Sbox : BaseServer4Sbox

v2rayN/ServiceLib/Resx/ResUI.Designer.cs

@@ -672,6 +672,15 @@ namespace ServiceLib.Resx {
             }
         }
         
+        /// <summary>
+        ///   查找类似 Add Child Configuration 的本地化字符串。
+        /// </summary>
+        public static string menuAddChildServer {
+            get {
+                return ResourceManager.GetString("menuAddChildServer", resourceCulture);
+            }
+        }
+        
         /// <summary>
         ///   查找类似 Add a custom configuration Configuration 的本地化字符串。
         /// </summary>
@@ -699,6 +708,24 @@ namespace ServiceLib.Resx {
             }
         }
         
+        /// <summary>
+        ///   查找类似 Add Policy Group Configuration 的本地化字符串。
+        /// </summary>
+        public static string menuAddPolicyGroupServer {
+            get {
+                return ResourceManager.GetString("menuAddPolicyGroupServer", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   查找类似 Add Proxy Chain Configuration 的本地化字符串。
+        /// </summary>
+        public static string menuAddProxyChainServer {
+            get {
+                return ResourceManager.GetString("menuAddProxyChainServer", resourceCulture);
+            }
+        }
+        
         /// <summary>
         ///   查找类似 Import Share Links from clipboard (Ctrl+V) 的本地化字符串。
         /// </summary>
@@ -951,6 +978,78 @@ namespace ServiceLib.Resx {
             }
         }
         
+        /// <summary>
+        ///   查找类似 Generate Policy Group from Multiple Profiles 的本地化字符串。
+        /// </summary>
+        public static string menuGenGroupMultipleServer {
+            get {
+                return ResourceManager.GetString("menuGenGroupMultipleServer", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   查找类似 Multi-Configuration Fallback by sing-box 的本地化字符串。
+        /// </summary>
+        public static string menuGenGroupMultipleServerSingBoxFallback {
+            get {
+                return ResourceManager.GetString("menuGenGroupMultipleServerSingBoxFallback", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   查找类似 Multi-Configuration LeastPing by sing-box 的本地化字符串。
+        /// </summary>
+        public static string menuGenGroupMultipleServerSingBoxLeastPing {
+            get {
+                return ResourceManager.GetString("menuGenGroupMultipleServerSingBoxLeastPing", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   查找类似 Multi-Configuration Fallback by Xray 的本地化字符串。
+        /// </summary>
+        public static string menuGenGroupMultipleServerXrayFallback {
+            get {
+                return ResourceManager.GetString("menuGenGroupMultipleServerXrayFallback", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   查找类似 Multi-Configuration LeastLoad by Xray 的本地化字符串。
+        /// </summary>
+        public static string menuGenGroupMultipleServerXrayLeastLoad {
+            get {
+                return ResourceManager.GetString("menuGenGroupMultipleServerXrayLeastLoad", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   查找类似 Multi-Configuration LeastPing by Xray 的本地化字符串。
+        /// </summary>
+        public static string menuGenGroupMultipleServerXrayLeastPing {
+            get {
+                return ResourceManager.GetString("menuGenGroupMultipleServerXrayLeastPing", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   查找类似 Multi-Configuration Random by Xray 的本地化字符串。
+        /// </summary>
+        public static string menuGenGroupMultipleServerXrayRandom {
+            get {
+                return ResourceManager.GetString("menuGenGroupMultipleServerXrayRandom", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   查找类似 Multi-Configuration RoundRobin by Xray 的本地化字符串。
+        /// </summary>
+        public static string menuGenGroupMultipleServerXrayRoundRobin {
+            get {
+                return ResourceManager.GetString("menuGenGroupMultipleServerXrayRoundRobin", resourceCulture);
+            }
+        }
+        
         /// <summary>
         ///   查找类似 Global Hotkey Setting 的本地化字符串。
         /// </summary>
@@ -1320,6 +1419,15 @@ namespace ServiceLib.Resx {
             }
         }
         
+        /// <summary>
+        ///   查找类似 Remove Child Configuration 的本地化字符串。
+        /// </summary>
+        public static string menuRemoveChildServer {
+            get {
+                return ResourceManager.GetString("menuRemoveChildServer", resourceCulture);
+            }
+        }
+        
         /// <summary>
         ///   查找类似 Remove duplicate Configurations 的本地化字符串。
         /// </summary>
@@ -1473,6 +1581,15 @@ namespace ServiceLib.Resx {
             }
         }
         
+        /// <summary>
+        ///   查找类似 Server List 的本地化字符串。
+        /// </summary>
+        public static string menuServerList {
+            get {
+                return ResourceManager.GetString("menuServerList", resourceCulture);
+            }
+        }
+        
         /// <summary>
         ///   查找类似 Configurations 的本地化字符串。
         /// </summary>
@@ -1482,60 +1599,6 @@ namespace ServiceLib.Resx {
             }
         }
         
-        /// <summary>
-        ///   查找类似 Multi-Configuration to custom configuration 的本地化字符串。
-        /// </summary>
-        public static string menuSetDefaultMultipleServer {
-            get {
-                return ResourceManager.GetString("menuSetDefaultMultipleServer", resourceCulture);
-            }
-        }
-        
-        /// <summary>
-        ///   查找类似 Multi-Configuration LeastPing by sing-box 的本地化字符串。
-        /// </summary>
-        public static string menuSetDefaultMultipleServerSingBoxLeastPing {
-            get {
-                return ResourceManager.GetString("menuSetDefaultMultipleServerSingBoxLeastPing", resourceCulture);
-            }
-        }
-        
-        /// <summary>
-        ///   查找类似 Multi-Configuration LeastLoad by Xray 的本地化字符串。
-        /// </summary>
-        public static string menuSetDefaultMultipleServerXrayLeastLoad {
-            get {
-                return ResourceManager.GetString("menuSetDefaultMultipleServerXrayLeastLoad", resourceCulture);
-            }
-        }
-        
-        /// <summary>
-        ///   查找类似 Multi-Configuration LeastPing by Xray 的本地化字符串。
-        /// </summary>
-        public static string menuSetDefaultMultipleServerXrayLeastPing {
-            get {
-                return ResourceManager.GetString("menuSetDefaultMultipleServerXrayLeastPing", resourceCulture);
-            }
-        }
-        
-        /// <summary>
-        ///   查找类似 Multi-Configuration Random by Xray 的本地化字符串。
-        /// </summary>
-        public static string menuSetDefaultMultipleServerXrayRandom {
-            get {
-                return ResourceManager.GetString("menuSetDefaultMultipleServerXrayRandom", resourceCulture);
-            }
-        }
-        
-        /// <summary>
-        ///   查找类似 Multi-Configuration RoundRobin by Xray 的本地化字符串。
-        /// </summary>
-        public static string menuSetDefaultMultipleServerXrayRoundRobin {
-            get {
-                return ResourceManager.GetString("menuSetDefaultMultipleServerXrayRoundRobin", resourceCulture);
-            }
-        }
-        
         /// <summary>
         ///   查找类似 Set as active Configuration (Enter) 的本地化字符串。
         /// </summary>
@@ -1995,6 +2058,15 @@ namespace ServiceLib.Resx {
             }
         }
         
+        /// <summary>
+        ///   查找类似 Please Add At Least One Configuration 的本地化字符串。
+        /// </summary>
+        public static string PleaseAddAtLeastOneServer {
+            get {
+                return ResourceManager.GetString("PleaseAddAtLeastOneServer", resourceCulture);
+            }
+        }
+        
         /// <summary>
         ///   查找类似 Please fill Remarks 的本地化字符串。
         /// </summary>
@@ -2373,6 +2445,24 @@ namespace ServiceLib.Resx {
             }
         }
         
+        /// <summary>
+        ///   查找类似 Policy Group 的本地化字符串。
+        /// </summary>
+        public static string TbConfigTypePolicyGroup {
+            get {
+                return ResourceManager.GetString("TbConfigTypePolicyGroup", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   查找类似 Proxy Chain 的本地化字符串。
+        /// </summary>
+        public static string TbConfigTypeProxyChain {
+            get {
+                return ResourceManager.GetString("TbConfigTypeProxyChain", resourceCulture);
+            }
+        }
+        
         /// <summary>
         ///   查找类似 Confirm 的本地化字符串。
         /// </summary>
@@ -2526,6 +2616,15 @@ namespace ServiceLib.Resx {
             }
         }
         
+        /// <summary>
+        ///   查找类似 Fallback 的本地化字符串。
+        /// </summary>
+        public static string TbFallback {
+            get {
+                return ResourceManager.GetString("TbFallback", resourceCulture);
+            }
+        }
+        
         /// <summary>
         ///   查找类似 Fingerprint 的本地化字符串。
         /// </summary>
@@ -2643,6 +2742,24 @@ namespace ServiceLib.Resx {
             }
         }
         
+        /// <summary>
+        ///   查找类似 Most Stable 的本地化字符串。
+        /// </summary>
+        public static string TbLeastLoad {
+            get {
+                return ResourceManager.GetString("TbLeastLoad", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   查找类似 Lowest Latency 的本地化字符串。
+        /// </summary>
+        public static string TbLeastPing {
+            get {
+                return ResourceManager.GetString("TbLeastPing", resourceCulture);
+            }
+        }
+        
         /// <summary>
         ///   查找类似 Address (IPv4, IPv6) 的本地化字符串。
         /// </summary>
@@ -2697,6 +2814,15 @@ namespace ServiceLib.Resx {
             }
         }
         
+        /// <summary>
+        ///   查找类似 Policy Group Type 的本地化字符串。
+        /// </summary>
+        public static string TbPolicyGroupType {
+            get {
+                return ResourceManager.GetString("TbPolicyGroupType", resourceCulture);
+            }
+        }
+        
         /// <summary>
         ///   查找类似 Port 的本地化字符串。
         /// </summary>
@@ -2769,6 +2895,15 @@ namespace ServiceLib.Resx {
             }
         }
         
+        /// <summary>
+        ///   查找类似 Random 的本地化字符串。
+        /// </summary>
+        public static string TbRandom {
+            get {
+                return ResourceManager.GetString("TbRandom", resourceCulture);
+            }
+        }
+        
         /// <summary>
         ///   查找类似 v2ray Full Config Template 的本地化字符串。
         /// </summary>
@@ -2832,6 +2967,15 @@ namespace ServiceLib.Resx {
             }
         }
         
+        /// <summary>
+        ///   查找类似 Round Robin 的本地化字符串。
+        /// </summary>
+        public static string TbRoundRobin {
+            get {
+                return ResourceManager.GetString("TbRoundRobin", resourceCulture);
+            }
+        }
+        
         /// <summary>
         ///   查找类似 socks: local port, socks2: second local port, socks3: LAN port 的本地化字符串。
         /// </summary>

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

@@ -1377,22 +1377,22 @@
   <data name="TbPorts7Tips" xml:space="preserve">
     <value>مخفی و پورت می شود، با کاما (،) جدا می شود</value>
   </data>
-  <data name="menuSetDefaultMultipleServer" xml:space="preserve">
-    <value>چند سرور به پیکربندی سفارشی</value>
+  <data name="menuGenGroupMultipleServer" xml:space="preserve">
+    <value>Generate Policy Group from Multiple Profiles</value>
   </data>
-  <data name="menuSetDefaultMultipleServerXrayRandom" xml:space="preserve">
+  <data name="menuGenGroupMultipleServerXrayRandom" xml:space="preserve">
     <value>چند سرور تصادفی توسط Xray</value>
   </data>
-  <data name="menuSetDefaultMultipleServerXrayRoundRobin" xml:space="preserve">
+  <data name="menuGenGroupMultipleServerXrayRoundRobin" xml:space="preserve">
     <value>چند سرور RoundRobin توسط Xray</value>
   </data>
-  <data name="menuSetDefaultMultipleServerXrayLeastPing" xml:space="preserve">
+  <data name="menuGenGroupMultipleServerXrayLeastPing" xml:space="preserve">
     <value>چند سرور LeastPing توسط Xray</value>
   </data>
-  <data name="menuSetDefaultMultipleServerXrayLeastLoad" xml:space="preserve">
+  <data name="menuGenGroupMultipleServerXrayLeastLoad" xml:space="preserve">
     <value>چند سرور LeastLoad توسط Xray</value>
   </data>
-  <data name="menuSetDefaultMultipleServerSingBoxLeastPing" xml:space="preserve">
+  <data name="menuGenGroupMultipleServerSingBoxLeastPing" xml:space="preserve">
     <value>LeastPing چند سرور توسط sing-box</value>
   </data>
   <data name="menuExportConfig" xml:space="preserve">
@@ -1515,4 +1515,52 @@
   <data name="TbFakeIPTips" xml:space="preserve">
     <value>Applies globally by default, with built-in FakeIP filtering (sing-box only).</value>
   </data>
+  <data name="PleaseAddAtLeastOneServer" xml:space="preserve">
+    <value>Please Add At Least One Configuration</value>
+  </data>
+  <data name="TbConfigTypePolicyGroup" xml:space="preserve">
+    <value>Policy Group</value>
+  </data>
+  <data name="TbConfigTypeProxyChain" xml:space="preserve">
+    <value>Proxy Chain</value>
+  </data>
+  <data name="TbLeastPing" xml:space="preserve">
+    <value>Lowest Latency</value>
+  </data>
+  <data name="TbRandom" xml:space="preserve">
+    <value>Random</value>
+  </data>
+  <data name="TbRoundRobin" xml:space="preserve">
+    <value>Round Robin</value>
+  </data>
+  <data name="TbLeastLoad" xml:space="preserve">
+    <value>Most Stable</value>
+  </data>
+  <data name="TbPolicyGroupType" xml:space="preserve">
+    <value>Policy Group Type</value>
+  </data>
+  <data name="menuAddPolicyGroupServer" xml:space="preserve">
+    <value>Add Policy Group Configuration</value>
+  </data>
+  <data name="menuAddProxyChainServer" xml:space="preserve">
+    <value>Add Proxy Chain Configuration</value>
+  </data>
+  <data name="menuAddChildServer" xml:space="preserve">
+    <value>Add Child Configuration</value>
+  </data>
+  <data name="menuRemoveChildServer" xml:space="preserve">
+    <value>Remove Child Configuration</value>
+  </data>
+  <data name="menuServerList" xml:space="preserve">
+    <value>Server List</value>
+  </data>
+  <data name="TbFallback" xml:space="preserve">
+    <value>Fallback</value>
+  </data>
+  <data name="menuGenGroupMultipleServerSingBoxFallback" xml:space="preserve">
+    <value>Multi-Configuration Fallback by sing-box</value>
+  </data>
+  <data name="menuGenGroupMultipleServerXrayFallback" xml:space="preserve">
+    <value>Multi-Configuration Fallback by Xray</value>
+  </data>
 </root>

v2rayN/ServiceLib/Resx/ResUI.hu.resx

@@ -1377,22 +1377,22 @@
   <data name="TbPorts7Tips" xml:space="preserve">
     <value>A portot lefedi, vesszővel (,) elválasztva</value>
   </data>
-  <data name="menuSetDefaultMultipleServer" xml:space="preserve">
-    <value>Több konfiguráció egyéni konfigurációra</value>
+  <data name="menuGenGroupMultipleServer" xml:space="preserve">
+    <value>Generate Policy Group from Multiple Profiles</value>
   </data>
-  <data name="menuSetDefaultMultipleServerXrayRandom" xml:space="preserve">
+  <data name="menuGenGroupMultipleServerXrayRandom" xml:space="preserve">
     <value>Több konfiguráció véletlenszerűen Xray szerint</value>
   </data>
-  <data name="menuSetDefaultMultipleServerXrayRoundRobin" xml:space="preserve">
+  <data name="menuGenGroupMultipleServerXrayRoundRobin" xml:space="preserve">
     <value>Több konfiguráció RoundRobin Xray szerint</value>
   </data>
-  <data name="menuSetDefaultMultipleServerXrayLeastPing" xml:space="preserve">
+  <data name="menuGenGroupMultipleServerXrayLeastPing" xml:space="preserve">
     <value>Több konfiguráció legkisebb pinggel Xray szerint</value>
   </data>
-  <data name="menuSetDefaultMultipleServerXrayLeastLoad" xml:space="preserve">
+  <data name="menuGenGroupMultipleServerXrayLeastLoad" xml:space="preserve">
     <value>Több konfiguráció legkisebb terheléssel Xray szerint</value>
   </data>
-  <data name="menuSetDefaultMultipleServerSingBoxLeastPing" xml:space="preserve">
+  <data name="menuGenGroupMultipleServerSingBoxLeastPing" xml:space="preserve">
     <value>Több konfiguráció legkisebb pinggel sing-box szerint</value>
   </data>
   <data name="menuExportConfig" xml:space="preserve">
@@ -1515,4 +1515,52 @@
   <data name="TbFakeIPTips" xml:space="preserve">
     <value>Applies globally by default, with built-in FakeIP filtering (sing-box only).</value>
   </data>
+  <data name="PleaseAddAtLeastOneServer" xml:space="preserve">
+    <value>Please Add At Least One Configuration</value>
+  </data>
+  <data name="TbConfigTypePolicyGroup" xml:space="preserve">
+    <value>Policy Group</value>
+  </data>
+  <data name="TbConfigTypeProxyChain" xml:space="preserve">
+    <value>Proxy Chain</value>
+  </data>
+  <data name="TbLeastPing" xml:space="preserve">
+    <value>Lowest Latency</value>
+  </data>
+  <data name="TbRandom" xml:space="preserve">
+    <value>Random</value>
+  </data>
+  <data name="TbRoundRobin" xml:space="preserve">
+    <value>Round Robin</value>
+  </data>
+  <data name="TbLeastLoad" xml:space="preserve">
+    <value>Most Stable</value>
+  </data>
+  <data name="TbPolicyGroupType" xml:space="preserve">
+    <value>Policy Group Type</value>
+  </data>
+  <data name="menuAddPolicyGroupServer" xml:space="preserve">
+    <value>Add Policy Group Configuration</value>
+  </data>
+  <data name="menuAddProxyChainServer" xml:space="preserve">
+    <value>Add Proxy Chain Configuration</value>
+  </data>
+  <data name="menuAddChildServer" xml:space="preserve">
+    <value>Add Child Configuration</value>
+  </data>
+  <data name="menuRemoveChildServer" xml:space="preserve">
+    <value>Remove Child Configuration</value>
+  </data>
+  <data name="menuServerList" xml:space="preserve">
+    <value>Server List</value>
+  </data>
+  <data name="TbFallback" xml:space="preserve">
+    <value>Fallback</value>
+  </data>
+  <data name="menuGenGroupMultipleServerSingBoxFallback" xml:space="preserve">
+    <value>Multi-Configuration Fallback by sing-box</value>
+  </data>
+  <data name="menuGenGroupMultipleServerXrayFallback" xml:space="preserve">
+    <value>Multi-Configuration Fallback by Xray</value>
+  </data>
 </root>

v2rayN/ServiceLib/Resx/ResUI.resx

@@ -1377,22 +1377,22 @@
   <data name="TbPorts7Tips" xml:space="preserve">
     <value>Will cover the port, separate with commas (,)</value>
   </data>
-  <data name="menuSetDefaultMultipleServer" xml:space="preserve">
-    <value>Multi-Configuration to custom configuration</value>
+  <data name="menuGenGroupMultipleServer" xml:space="preserve">
+    <value>Generate Policy Group from Multiple Profiles</value>
   </data>
-  <data name="menuSetDefaultMultipleServerXrayRandom" xml:space="preserve">
+  <data name="menuGenGroupMultipleServerXrayRandom" xml:space="preserve">
     <value>Multi-Configuration Random by Xray</value>
   </data>
-  <data name="menuSetDefaultMultipleServerXrayRoundRobin" xml:space="preserve">
+  <data name="menuGenGroupMultipleServerXrayRoundRobin" xml:space="preserve">
     <value>Multi-Configuration RoundRobin by Xray</value>
   </data>
-  <data name="menuSetDefaultMultipleServerXrayLeastPing" xml:space="preserve">
+  <data name="menuGenGroupMultipleServerXrayLeastPing" xml:space="preserve">
     <value>Multi-Configuration LeastPing by Xray</value>
   </data>
-  <data name="menuSetDefaultMultipleServerXrayLeastLoad" xml:space="preserve">
+  <data name="menuGenGroupMultipleServerXrayLeastLoad" xml:space="preserve">
     <value>Multi-Configuration LeastLoad by Xray</value>
   </data>
-  <data name="menuSetDefaultMultipleServerSingBoxLeastPing" xml:space="preserve">
+  <data name="menuGenGroupMultipleServerSingBoxLeastPing" xml:space="preserve">
     <value>Multi-Configuration LeastPing by sing-box</value>
   </data>
   <data name="menuExportConfig" xml:space="preserve">
@@ -1515,4 +1515,52 @@
   <data name="TbFakeIPTips" xml:space="preserve">
     <value>Applies globally by default, with built-in FakeIP filtering (sing-box only).</value>
   </data>
+  <data name="PleaseAddAtLeastOneServer" xml:space="preserve">
+    <value>Please Add At Least One Configuration</value>
+  </data>
+  <data name="TbConfigTypePolicyGroup" xml:space="preserve">
+    <value>Policy Group</value>
+  </data>
+  <data name="TbConfigTypeProxyChain" xml:space="preserve">
+    <value>Proxy Chain</value>
+  </data>
+  <data name="TbLeastPing" xml:space="preserve">
+    <value>Lowest Latency</value>
+  </data>
+  <data name="TbRandom" xml:space="preserve">
+    <value>Random</value>
+  </data>
+  <data name="TbRoundRobin" xml:space="preserve">
+    <value>Round Robin</value>
+  </data>
+  <data name="TbLeastLoad" xml:space="preserve">
+    <value>Most Stable</value>
+  </data>
+  <data name="TbPolicyGroupType" xml:space="preserve">
+    <value>Policy Group Type</value>
+  </data>
+  <data name="menuAddPolicyGroupServer" xml:space="preserve">
+    <value>Add Policy Group Configuration</value>
+  </data>
+  <data name="menuAddProxyChainServer" xml:space="preserve">
+    <value>Add Proxy Chain Configuration</value>
+  </data>
+  <data name="menuAddChildServer" xml:space="preserve">
+    <value>Add Child Configuration</value>
+  </data>
+  <data name="menuRemoveChildServer" xml:space="preserve">
+    <value>Remove Child Configuration</value>
+  </data>
+  <data name="menuServerList" xml:space="preserve">
+    <value>Server List</value>
+  </data>
+  <data name="TbFallback" xml:space="preserve">
+    <value>Fallback</value>
+  </data>
+  <data name="menuGenGroupMultipleServerSingBoxFallback" xml:space="preserve">
+    <value>Multi-Configuration Fallback by sing-box</value>
+  </data>
+  <data name="menuGenGroupMultipleServerXrayFallback" xml:space="preserve">
+    <value>Multi-Configuration Fallback by Xray</value>
+  </data>
 </root>

v2rayN/ServiceLib/Resx/ResUI.ru.resx

@@ -1377,22 +1377,22 @@
   <data name="TbPorts7Tips" xml:space="preserve">
     <value>Заменит указанный порт, перечисляйте через запятую (,)</value>
   </data>
-  <data name="menuSetDefaultMultipleServer" xml:space="preserve">
-    <value>От мультиконфигурации к пользовательской конфигурации</value>
+  <data name="menuGenGroupMultipleServer" xml:space="preserve">
+    <value>Generate Policy Group from Multiple Profiles</value>
   </data>
-  <data name="menuSetDefaultMultipleServerXrayRandom" xml:space="preserve">
+  <data name="menuGenGroupMultipleServerXrayRandom" xml:space="preserve">
     <value>Случайный (Xray)</value>
   </data>
-  <data name="menuSetDefaultMultipleServerXrayRoundRobin" xml:space="preserve">
+  <data name="menuGenGroupMultipleServerXrayRoundRobin" xml:space="preserve">
     <value>Круговой (Xray)</value>
   </data>
-  <data name="menuSetDefaultMultipleServerXrayLeastPing" xml:space="preserve">
+  <data name="menuGenGroupMultipleServerXrayLeastPing" xml:space="preserve">
     <value>Минимальное RTT (минимальное время туда-обратно) (Xray)</value>
   </data>
-  <data name="menuSetDefaultMultipleServerXrayLeastLoad" xml:space="preserve">
+  <data name="menuGenGroupMultipleServerXrayLeastLoad" xml:space="preserve">
     <value>Минимальная нагрузка (Xray)</value>
   </data>
-  <data name="menuSetDefaultMultipleServerSingBoxLeastPing" xml:space="preserve">
+  <data name="menuGenGroupMultipleServerSingBoxLeastPing" xml:space="preserve">
     <value>Минимальное RTT (минимальное время туда-обратно) (sing-box)</value>
   </data>
   <data name="menuExportConfig" xml:space="preserve">
@@ -1515,4 +1515,52 @@
   <data name="TbFakeIPTips" xml:space="preserve">
     <value>Applies globally by default, with built-in FakeIP filtering (sing-box only).</value>
   </data>
+  <data name="PleaseAddAtLeastOneServer" xml:space="preserve">
+    <value>Please Add At Least One Configuration</value>
+  </data>
+  <data name="TbConfigTypePolicyGroup" xml:space="preserve">
+    <value>Policy Group</value>
+  </data>
+  <data name="TbConfigTypeProxyChain" xml:space="preserve">
+    <value>Proxy Chain</value>
+  </data>
+  <data name="TbLeastPing" xml:space="preserve">
+    <value>Lowest Latency</value>
+  </data>
+  <data name="TbRandom" xml:space="preserve">
+    <value>Random</value>
+  </data>
+  <data name="TbRoundRobin" xml:space="preserve">
+    <value>Round Robin</value>
+  </data>
+  <data name="TbLeastLoad" xml:space="preserve">
+    <value>Most Stable</value>
+  </data>
+  <data name="TbPolicyGroupType" xml:space="preserve">
+    <value>Policy Group Type</value>
+  </data>
+  <data name="menuAddPolicyGroupServer" xml:space="preserve">
+    <value>Add Policy Group Configuration</value>
+  </data>
+  <data name="menuAddProxyChainServer" xml:space="preserve">
+    <value>Add Proxy Chain Configuration</value>
+  </data>
+  <data name="menuAddChildServer" xml:space="preserve">
+    <value>Add Child Configuration</value>
+  </data>
+  <data name="menuRemoveChildServer" xml:space="preserve">
+    <value>Remove Child Configuration</value>
+  </data>
+  <data name="menuServerList" xml:space="preserve">
+    <value>Server List</value>
+  </data>
+  <data name="TbFallback" xml:space="preserve">
+    <value>Fallback</value>
+  </data>
+  <data name="menuGenGroupMultipleServerSingBoxFallback" xml:space="preserve">
+    <value>Multi-Configuration Fallback by sing-box</value>
+  </data>
+  <data name="menuGenGroupMultipleServerXrayFallback" xml:space="preserve">
+    <value>Multi-Configuration Fallback by Xray</value>
+  </data>
 </root>

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

@@ -1374,22 +1374,22 @@
   <data name="TbPorts7Tips" xml:space="preserve">
     <value>会覆盖端口，多组时用逗号 (,) 隔开</value>
   </data>
-  <data name="menuSetDefaultMultipleServer" xml:space="preserve">
-    <value>多配置文件产生自定义配置 (多选)</value>
+  <data name="menuGenGroupMultipleServer" xml:space="preserve">
+    <value>多配置文件生成策略组</value>
   </data>
-  <data name="menuSetDefaultMultipleServerXrayRandom" xml:space="preserve">
+  <data name="menuGenGroupMultipleServerXrayRandom" xml:space="preserve">
     <value>多配置文件随机 Xray</value>
   </data>
-  <data name="menuSetDefaultMultipleServerXrayRoundRobin" xml:space="preserve">
+  <data name="menuGenGroupMultipleServerXrayRoundRobin" xml:space="preserve">
     <value>多配置文件负载均衡 Xray</value>
   </data>
-  <data name="menuSetDefaultMultipleServerXrayLeastPing" xml:space="preserve">
+  <data name="menuGenGroupMultipleServerXrayLeastPing" xml:space="preserve">
     <value>多配置文件最低延迟 Xray</value>
   </data>
-  <data name="menuSetDefaultMultipleServerXrayLeastLoad" xml:space="preserve">
+  <data name="menuGenGroupMultipleServerXrayLeastLoad" xml:space="preserve">
     <value>多配置文件最稳定 Xray</value>
   </data>
-  <data name="menuSetDefaultMultipleServerSingBoxLeastPing" xml:space="preserve">
+  <data name="menuGenGroupMultipleServerSingBoxLeastPing" xml:space="preserve">
     <value>多配置文件最低延迟 sing-box</value>
   </data>
   <data name="menuExportConfig" xml:space="preserve">
@@ -1512,4 +1512,52 @@
   <data name="TbFakeIPTips" xml:space="preserve">
     <value>默认全局生效，内置 FakeIP 过滤，仅在 sing-box 中生效</value>
   </data>
+  <data name="PleaseAddAtLeastOneServer" xml:space="preserve">
+    <value>请至少添加一个配置文件</value>
+  </data>
+  <data name="TbConfigTypePolicyGroup" xml:space="preserve">
+    <value>策略组</value>
+  </data>
+  <data name="TbConfigTypeProxyChain" xml:space="preserve">
+    <value>链式代理</value>
+  </data>
+  <data name="TbLeastPing" xml:space="preserve">
+    <value>最低延迟</value>
+  </data>
+  <data name="TbRandom" xml:space="preserve">
+    <value>随机</value>
+  </data>
+  <data name="TbRoundRobin" xml:space="preserve">
+    <value>负载均衡</value>
+  </data>
+  <data name="TbLeastLoad" xml:space="preserve">
+    <value>最稳定</value>
+  </data>
+  <data name="TbPolicyGroupType" xml:space="preserve">
+    <value>策略组类型</value>
+  </data>
+  <data name="menuAddPolicyGroupServer" xml:space="preserve">
+    <value>添加策略组配置文件</value>
+  </data>
+  <data name="menuAddProxyChainServer" xml:space="preserve">
+    <value>添加链式代理配置文件</value>
+  </data>
+  <data name="menuAddChildServer" xml:space="preserve">
+    <value>添加子配置文件</value>
+  </data>
+  <data name="menuRemoveChildServer" xml:space="preserve">
+    <value>删除子配置文件</value>
+  </data>
+  <data name="menuServerList" xml:space="preserve">
+    <value>服务器列表</value>
+  </data>
+  <data name="TbFallback" xml:space="preserve">
+    <value>故障转移</value>
+  </data>
+  <data name="menuGenGroupMultipleServerSingBoxFallback" xml:space="preserve">
+    <value>多配置文件故障转移 sing-box</value>
+  </data>
+  <data name="menuGenGroupMultipleServerXrayFallback" xml:space="preserve">
+    <value>多配置文件故障转移 Xray</value>
+  </data>
 </root>

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

@@ -1374,22 +1374,22 @@
   <data name="TbPorts7Tips" xml:space="preserve">
     <value>會覆蓋埠，多組時用逗號 (,) 隔開</value>
   </data>
-  <data name="menuSetDefaultMultipleServer" xml:space="preserve">
-    <value>多設定檔產生自訂配置 (多選)</value>
+  <data name="menuGenGroupMultipleServer" xml:space="preserve">
+    <value>Generate Policy Group from Multiple Profiles</value>
   </data>
-  <data name="menuSetDefaultMultipleServerXrayRandom" xml:space="preserve">
+  <data name="menuGenGroupMultipleServerXrayRandom" xml:space="preserve">
     <value>多設定檔隨機 Xray</value>
   </data>
-  <data name="menuSetDefaultMultipleServerXrayRoundRobin" xml:space="preserve">
+  <data name="menuGenGroupMultipleServerXrayRoundRobin" xml:space="preserve">
     <value>多設定檔負載平衡 Xray</value>
   </data>
-  <data name="menuSetDefaultMultipleServerXrayLeastPing" xml:space="preserve">
+  <data name="menuGenGroupMultipleServerXrayLeastPing" xml:space="preserve">
     <value>多設定檔最低延遲 Xray</value>
   </data>
-  <data name="menuSetDefaultMultipleServerXrayLeastLoad" xml:space="preserve">
+  <data name="menuGenGroupMultipleServerXrayLeastLoad" xml:space="preserve">
     <value>多設定檔最穩定 Xray</value>
   </data>
-  <data name="menuSetDefaultMultipleServerSingBoxLeastPing" xml:space="preserve">
+  <data name="menuGenGroupMultipleServerSingBoxLeastPing" xml:space="preserve">
     <value>多設定檔最低延遲 sing-box</value>
   </data>
   <data name="menuExportConfig" xml:space="preserve">
@@ -1512,4 +1512,52 @@
   <data name="TbFakeIPTips" xml:space="preserve">
     <value>Applies globally by default, with built-in FakeIP filtering (sing-box only).</value>
   </data>
+  <data name="PleaseAddAtLeastOneServer" xml:space="preserve">
+    <value>Please Add At Least One Configuration</value>
+  </data>
+  <data name="TbConfigTypePolicyGroup" xml:space="preserve">
+    <value>Policy Group</value>
+  </data>
+  <data name="TbConfigTypeProxyChain" xml:space="preserve">
+    <value>Proxy Chain</value>
+  </data>
+  <data name="TbLeastPing" xml:space="preserve">
+    <value>Lowest Latency</value>
+  </data>
+  <data name="TbRandom" xml:space="preserve">
+    <value>Random</value>
+  </data>
+  <data name="TbRoundRobin" xml:space="preserve">
+    <value>Round Robin</value>
+  </data>
+  <data name="TbLeastLoad" xml:space="preserve">
+    <value>Most Stable</value>
+  </data>
+  <data name="TbPolicyGroupType" xml:space="preserve">
+    <value>Policy Group Type</value>
+  </data>
+  <data name="menuAddPolicyGroupServer" xml:space="preserve">
+    <value>Add Policy Group Configuration</value>
+  </data>
+  <data name="menuAddProxyChainServer" xml:space="preserve">
+    <value>Add Proxy Chain Configuration</value>
+  </data>
+  <data name="menuAddChildServer" xml:space="preserve">
+    <value>Add Child Configuration</value>
+  </data>
+  <data name="menuRemoveChildServer" xml:space="preserve">
+    <value>Remove Child Configuration</value>
+  </data>
+  <data name="menuServerList" xml:space="preserve">
+    <value>Server List</value>
+  </data>
+  <data name="TbFallback" xml:space="preserve">
+    <value>Fallback</value>
+  </data>
+  <data name="menuGenGroupMultipleServerSingBoxFallback" xml:space="preserve">
+    <value>Multi-Configuration Fallback by sing-box</value>
+  </data>
+  <data name="menuGenGroupMultipleServerXrayFallback" xml:space="preserve">
+    <value>Multi-Configuration Fallback by Xray</value>
+  </data>
 </root>

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

@@ -15,6 +15,33 @@ public partial class CoreConfigSingboxService(Config config)
         var ret = new RetResult();
         try
         {
+            if (node?.ConfigType is EConfigType.PolicyGroup or EConfigType.ProxyChain)
+            {
+                ProfileGroupItemManager.Instance.TryGet(node.IndexId, out var profileGroupItem);
+                if (profileGroupItem == null || profileGroupItem.ChildItems.IsNullOrEmpty())
+                {
+                    ret.Msg = ResUI.CheckServerSettings;
+                    return ret;
+                }
+                var childProfiles = (await Task.WhenAll(
+                        Utils.String2List(profileGroupItem.ChildItems)
+                        .Where(p => !p.IsNullOrEmpty())
+                        .Select(AppManager.Instance.GetProfileItem)
+                    )).Where(p => p != null).ToList();
+                if (childProfiles.Count <= 0)
+                {
+                    ret.Msg = ResUI.CheckServerSettings;
+                    return ret;
+                }
+                switch (node.ConfigType)
+                {
+                    case EConfigType.PolicyGroup:
+                        return await GenerateClientMultipleLoadConfig(childProfiles, profileGroupItem.MultipleLoad);
+                    case EConfigType.ProxyChain:
+                        return await GenerateClientChainConfig(childProfiles);
+                }
+            }
+
             if (node == null
                 || node.Port <= 0)
             {
@@ -344,7 +371,105 @@ public partial class CoreConfigSingboxService(Config config)
         }
     }
 
-    public async Task<RetResult> GenerateClientMultipleLoadConfig(List<ProfileItem> selecteds)
+    public async Task<RetResult> GenerateClientMultipleLoadConfig(List<ProfileItem> selecteds, EMultipleLoad multipleLoad)
+    {
+        var ret = new RetResult();
+        try
+        {
+            if (_config == null)
+            {
+                ret.Msg = ResUI.CheckServerSettings;
+                return ret;
+            }
+
+            ret.Msg = ResUI.InitialConfiguration;
+
+            var result = EmbedUtils.GetEmbedText(Global.SingboxSampleClient);
+            var txtOutbound = EmbedUtils.GetEmbedText(Global.SingboxSampleOutbound);
+            if (result.IsNullOrEmpty() || txtOutbound.IsNullOrEmpty())
+            {
+                ret.Msg = ResUI.FailedGetDefaultConfiguration;
+                return ret;
+            }
+
+            var singboxConfig = JsonUtils.Deserialize<SingboxConfig>(result);
+            if (singboxConfig == null)
+            {
+                ret.Msg = ResUI.FailedGenDefaultConfiguration;
+                return ret;
+            }
+            singboxConfig.outbounds.RemoveAt(0);
+
+            await GenLog(singboxConfig);
+            await GenInbounds(singboxConfig);
+            await GenRouting(singboxConfig);
+            await GenExperimental(singboxConfig);
+
+            var proxyProfiles = new List<ProfileItem>();
+            foreach (var it in selecteds)
+            {
+                if (it.ConfigType is EConfigType.PolicyGroup or EConfigType.ProxyChain)
+                {
+                    var itemGroup = await AppManager.Instance.GetProfileItem(it.IndexId);
+                    proxyProfiles.Add(itemGroup);
+                }
+                if (!Global.SingboxSupportConfigType.Contains(it.ConfigType))
+                {
+                    continue;
+                }
+                if (it.Port <= 0)
+                {
+                    continue;
+                }
+                var item = await AppManager.Instance.GetProfileItem(it.IndexId);
+                if (item is null)
+                {
+                    continue;
+                }
+                if (it.ConfigType is EConfigType.VMess or EConfigType.VLESS)
+                {
+                    if (item.Id.IsNullOrEmpty() || !Utils.IsGuidByParse(item.Id))
+                    {
+                        continue;
+                    }
+                }
+                if (item.ConfigType == EConfigType.Shadowsocks
+                  && !Global.SsSecuritiesInSingbox.Contains(item.Security))
+                {
+                    continue;
+                }
+                if (item.ConfigType == EConfigType.VLESS && !Global.Flows.Contains(item.Flow))
+                {
+                    continue;
+                }
+
+                //outbound
+                proxyProfiles.Add(item);
+            }
+            if (proxyProfiles.Count <= 0)
+            {
+                ret.Msg = ResUI.FailedGenDefaultConfiguration;
+                return ret;
+            }
+            await GenOutboundsListWithChain(proxyProfiles, singboxConfig, multipleLoad);
+
+            await GenDns(null, singboxConfig);
+            await ConvertGeo2Ruleset(singboxConfig);
+
+            ret.Success = true;
+
+            ret.Data = await ApplyFullConfigTemplate(singboxConfig);
+            return ret;
+        }
+        catch (Exception ex)
+        {
+            Logging.SaveLog(_tag, ex);
+            ret.Msg = ResUI.FailedGenDefaultConfiguration;
+            return ret;
+        }
+    }
+
+    public async Task<RetResult> GenerateClientChainConfig(List<ProfileItem> selecteds)
     {
         var ret = new RetResult();
         try
@@ -419,7 +544,7 @@ public partial class CoreConfigSingboxService(Config config)
                 ret.Msg = ResUI.FailedGenDefaultConfiguration;
                 return ret;
             }
-            await GenOutboundsList(proxyProfiles, singboxConfig);
+            await GenChainOutboundsList(proxyProfiles, singboxConfig);
 
             await GenDns(null, singboxConfig);
             await ConvertGeo2Ruleset(singboxConfig);

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

@@ -43,16 +43,7 @@ public partial class CoreConfigSingboxService
                 });
             }
 
-            // Tun2SocksAddress
-            if (node != null && Utils.IsDomain(node.Address))
-            {
-                singboxConfig.dns.rules ??= new List<Rule4Sbox>();
-                singboxConfig.dns.rules.Insert(0, new Rule4Sbox
-                {
-                    server = Global.SingboxOutboundResolverTag,
-                    domain = [node.Address],
-                });
-            }
+            await GenOutboundDnsRule(node, singboxConfig, Global.SingboxOutboundResolverTag);
         }
         catch (Exception ex)
         {
@@ -346,16 +337,7 @@ public partial class CoreConfigSingboxService
                 await GenDnsDomainsLegacyCompatible(singboxConfig, item);
             }
 
-            // Tun2SocksAddress
-            if (node != null && Utils.IsDomain(node.Address))
-            {
-                singboxConfig.dns.rules ??= new List<Rule4Sbox>();
-                singboxConfig.dns.rules.Insert(0, new Rule4Sbox
-                {
-                    server = Global.SingboxFinalResolverTag,
-                    domain = [node.Address],
-                });
-            }
+            await GenOutboundDnsRule(node, singboxConfig, Global.SingboxFinalResolverTag);
         }
         catch (Exception ex)
         {
@@ -425,6 +407,37 @@ public partial class CoreConfigSingboxService
         return await Task.FromResult(0);
     }
 
+    private async Task<int> GenOutboundDnsRule(ProfileItem? node, SingboxConfig singboxConfig, string? server)
+    {
+        if (node == null)
+        {
+            return 0;
+        }
+
+        var domain = string.Empty;
+        if (Utils.IsDomain(node.Address)) // normal outbound
+        {
+            domain = node.Address;
+        }
+        else if (node.Address == Global.Loopback && node.SpiderX.IsNotEmpty() && Utils.IsDomain(node.SpiderX)) // Tun2SocksAddress
+        {
+            domain = node.SpiderX;
+        }
+        if (domain.IsNullOrEmpty())
+        {
+            return 0;
+        }
+
+        singboxConfig.dns.rules ??= new List<Rule4Sbox>();
+        singboxConfig.dns.rules.Insert(0, new Rule4Sbox
+        {
+            server = server,
+            domain = [domain],
+        });
+
+        return await Task.FromResult(0);
+    }
+
     private static Server4Sbox? ParseDnsAddress(string address)
     {
         var addressFirst = address?.Split(address.Contains(',') ? ',' : ';').FirstOrDefault()?.Trim();

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

@@ -179,13 +179,21 @@ public partial class CoreConfigSingboxService
             if (node.ConfigType == EConfigType.WireGuard)
             {
                 var endpoint = JsonUtils.Deserialize<Endpoints4Sbox>(txtOutbound);
-                await GenEndpoint(node, endpoint);
+                var ret = await GenEndpoint(node, endpoint);
+                if (ret != 0)
+                {
+                    return null;
+                }
                 return endpoint;
             }
             else
             {
                 var outbound = JsonUtils.Deserialize<Outbound4Sbox>(txtOutbound);
-                await GenOutbound(node, outbound);
+                var ret = await GenOutbound(node, outbound);
+                if (ret != 0)
+                {
+                    return null;
+                }
                 return outbound;
             }
         }
@@ -410,7 +418,7 @@ public partial class CoreConfigSingboxService
         return 0;
     }
 
-    private async Task<int> GenOutboundsList(List<ProfileItem> nodes, SingboxConfig singboxConfig)
+    private async Task<int> GenOutboundsListWithChain(List<ProfileItem> nodes, SingboxConfig singboxConfig, EMultipleLoad multipleLoad, string baseTagName = Global.ProxyTag)
     {
         try
         {
@@ -438,6 +446,38 @@ public partial class CoreConfigSingboxService
             {
                 index++;
 
+                if (node.ConfigType is EConfigType.PolicyGroup or EConfigType.ProxyChain)
+                {
+                    ProfileGroupItemManager.Instance.TryGet(node.IndexId, out var profileGroupItem);
+                    if (profileGroupItem == null || profileGroupItem.ChildItems.IsNullOrEmpty())
+                    {
+                        continue;
+                    }
+                    var childProfiles = (await Task.WhenAll(
+                            Utils.String2List(profileGroupItem.ChildItems)
+                            .Where(p => !p.IsNullOrEmpty())
+                            .Select(AppManager.Instance.GetProfileItem)
+                        )).Where(p => p != null).ToList();
+                    if (childProfiles.Count <= 0)
+                    {
+                        continue;
+                    }
+                    var childBaseTagName = $"{baseTagName}-{index}";
+                    var ret = node.ConfigType switch
+                    {
+                        EConfigType.PolicyGroup =>
+                            await GenOutboundsListWithChain(childProfiles, singboxConfig, profileGroupItem.MultipleLoad, childBaseTagName),
+                        EConfigType.ProxyChain =>
+                            await GenChainOutboundsList(childProfiles, singboxConfig, childBaseTagName),
+                        _ => throw new NotImplementedException()
+                    };
+                    if (ret == 0)
+                    {
+                        proxyTags.Add(childBaseTagName);
+                    }
+                    continue;
+                }
+
                 // Handle proxy chain
                 string? prevTag = null;
                 var currentServer = await GenServer(node);
@@ -450,7 +490,7 @@ public partial class CoreConfigSingboxService
                 var subItem = await AppManager.Instance.GetSubItem(node.Subid);
 
                 // current proxy
-                currentServer.tag = $"{Global.ProxyTag}-{index}";
+                currentServer.tag = $"{baseTagName}-{index}";
                 proxyTags.Add(currentServer.tag);
 
                 if (!node.Subid.IsNullOrEmpty())
@@ -467,7 +507,7 @@ public partial class CoreConfigSingboxService
                         {
                             var prevOutbound = JsonUtils.Deserialize<Outbound4Sbox>(txtOutbound);
                             await GenOutbound(prevNode, prevOutbound);
-                            prevTag = $"prev-{Global.ProxyTag}-{++prevIndex}";
+                            prevTag = $"prev-{baseTagName}-{++prevIndex}";
                             prevOutbound.tag = prevTag;
                             prevOutbounds.Add(prevOutbound);
                         }
@@ -508,16 +548,21 @@ public partial class CoreConfigSingboxService
                 var outUrltest = new Outbound4Sbox
                 {
                     type = "urltest",
-                    tag = $"{Global.ProxyTag}-auto",
+                    tag = $"{baseTagName}-auto",
                     outbounds = proxyTags,
                     interrupt_exist_connections = false,
                 };
 
+                if (multipleLoad == EMultipleLoad.Fallback)
+                {
+                    outUrltest.tolerance = 5000;
+                }
+
                 // Add selector outbound (manual selection)
                 var outSelector = new Outbound4Sbox
                 {
                     type = "selector",
-                    tag = Global.ProxyTag,
+                    tag = baseTagName,
                     outbounds = JsonUtils.DeepCopy(proxyTags),
                     interrupt_exist_connections = false,
                 };
@@ -574,4 +619,114 @@ public partial class CoreConfigSingboxService
         }
         return null;
     }
+
+    private async Task<int> GenOutboundsList(List<ProfileItem> nodes, SingboxConfig singboxConfig, EMultipleLoad multipleLoad, string baseTagName = Global.ProxyTag)
+    {
+        var resultOutbounds = new List<Outbound4Sbox>();
+        var resultEndpoints = new List<Endpoints4Sbox>(); // For endpoints
+        var proxyTags = new List<string>(); // For selector and urltest outbounds
+        for (var i = 0; i < nodes.Count; i++)
+        {
+            var node = nodes[i];
+            var server = await GenServer(node);
+            if (server is null)
+            {
+                break;
+            }
+            server.tag = baseTagName + (i + 1).ToString();
+            if (server is Endpoints4Sbox endpoint)
+            {
+                resultEndpoints.Add(endpoint);
+            }
+            else if (server is Outbound4Sbox outbound)
+            {
+                resultOutbounds.Add(outbound);
+            }
+            proxyTags.Add(server.tag);
+        }
+        // Add urltest outbound (auto selection based on latency)
+        if (proxyTags.Count > 0)
+        {
+            var outUrltest = new Outbound4Sbox
+            {
+                type = "urltest",
+                tag = $"{baseTagName}-auto",
+                outbounds = proxyTags,
+                interrupt_exist_connections = false,
+            };
+            if (multipleLoad == EMultipleLoad.Fallback)
+            {
+                outUrltest.tolerance = 5000;
+            }
+            // Add selector outbound (manual selection)
+            var outSelector = new Outbound4Sbox
+            {
+                type = "selector",
+                tag = baseTagName,
+                outbounds = JsonUtils.DeepCopy(proxyTags),
+                interrupt_exist_connections = false,
+            };
+            outSelector.outbounds.Insert(0, outUrltest.tag);
+            // Insert these at the beginning
+            resultOutbounds.Insert(0, outUrltest);
+            resultOutbounds.Insert(0, outSelector);
+        }
+        singboxConfig.outbounds ??= new();
+        resultOutbounds.AddRange(singboxConfig.outbounds);
+        singboxConfig.outbounds = resultOutbounds;
+        singboxConfig.endpoints ??= new();
+        resultEndpoints.AddRange(singboxConfig.endpoints);
+        singboxConfig.endpoints = resultEndpoints;
+        return await Task.FromResult(0);
+    }
+
+    private async Task<int> GenChainOutboundsList(List<ProfileItem> nodes, SingboxConfig singboxConfig, string baseTagName = Global.ProxyTag)
+    {
+        // Based on actual network flow instead of data packets
+        var nodesReverse = nodes.AsEnumerable().Reverse().ToList();
+        var resultOutbounds = new List<Outbound4Sbox>();
+        var resultEndpoints = new List<Endpoints4Sbox>(); // For endpoints
+        for (var i = 0; i < nodesReverse.Count; i++)
+        {
+            var node = nodesReverse[i];
+            var server = await GenServer(node);
+
+            if (server is null)
+            {
+                break;
+            }
+
+            if (i == 0)
+            {
+                server.tag = baseTagName;
+            }
+            else
+            {
+                server.tag = baseTagName + i.ToString();
+            }
+
+            if (i != nodesReverse.Count - 1)
+            {
+                server.detour = baseTagName + (i + 1).ToString();
+            }
+
+            if (server is Endpoints4Sbox endpoint)
+            {
+                resultEndpoints.Add(endpoint);
+            }
+            else if (server is Outbound4Sbox outbound)
+            {
+                resultOutbounds.Add(outbound);
+            }
+        }
+        singboxConfig.outbounds ??= new();
+        resultOutbounds.AddRange(singboxConfig.outbounds);
+        singboxConfig.outbounds = resultOutbounds;
+
+        singboxConfig.endpoints ??= new();
+        resultEndpoints.AddRange(singboxConfig.endpoints);
+        singboxConfig.endpoints = resultEndpoints;
+
+        return await Task.FromResult(0);
+    }
 }

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

@@ -368,8 +368,10 @@ public partial class CoreConfigSingboxService
         }
 
         var node = await AppManager.Instance.GetProfileItemViaRemarks(outboundTag);
+
         if (node == null
-            || !Global.SingboxSupportConfigType.Contains(node.ConfigType))
+            || (!Global.SingboxSupportConfigType.Contains(node.ConfigType)
+            && node.ConfigType is not (EConfigType.PolicyGroup or EConfigType.ProxyChain)))
         {
             return Global.ProxyTag;
         }
@@ -381,13 +383,45 @@ public partial class CoreConfigSingboxService
             return tag;
         }
 
+        if (node.ConfigType is EConfigType.PolicyGroup or EConfigType.ProxyChain)
+        {
+            ProfileGroupItemManager.Instance.TryGet(node.IndexId, out var profileGroupItem);
+            if (profileGroupItem == null || profileGroupItem.ChildItems.IsNullOrEmpty())
+            {
+                return Global.ProxyTag;
+            }
+            var childProfiles = (await Task.WhenAll(
+                    Utils.String2List(profileGroupItem.ChildItems)
+                    .Where(p => !p.IsNullOrEmpty())
+                    .Select(AppManager.Instance.GetProfileItem)
+                )).Where(p => p != null).ToList();
+            if (childProfiles.Count <= 0)
+            {
+                return Global.ProxyTag;
+            }
+            var childBaseTagName = $"{Global.ProxyTag}-{node.IndexId}";
+            var ret = node.ConfigType switch
+            {
+                EConfigType.PolicyGroup =>
+                    await GenOutboundsListWithChain(childProfiles, singboxConfig, profileGroupItem.MultipleLoad, childBaseTagName),
+                EConfigType.ProxyChain =>
+                    await GenChainOutboundsList(childProfiles, singboxConfig, childBaseTagName),
+                _ => throw new NotImplementedException()
+            };
+            if (ret == 0)
+            {
+                return childBaseTagName;
+            }
+            return Global.ProxyTag;
+        }
+
         var server = await GenServer(node);
         if (server is null)
         {
             return Global.ProxyTag;
         }
 
-        server.tag = Global.ProxyTag + node.IndexId.ToString();
+        server.tag = tag;
         if (server is Endpoints4Sbox endpoint)
         {
             singboxConfig.endpoints ??= new();

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

@@ -15,6 +15,33 @@ public partial class CoreConfigV2rayService(Config config)
         var ret = new RetResult();
         try
         {
+            if (node?.ConfigType is EConfigType.PolicyGroup or EConfigType.ProxyChain)
+            {
+                ProfileGroupItemManager.Instance.TryGet(node.IndexId, out var profileGroupItem);
+                if (profileGroupItem == null || profileGroupItem.ChildItems.IsNullOrEmpty())
+                {
+                    ret.Msg = ResUI.CheckServerSettings;
+                    return ret;
+                }
+                var childProfiles = (await Task.WhenAll(
+                        Utils.String2List(profileGroupItem.ChildItems)
+                        .Where(p => !p.IsNullOrEmpty())
+                        .Select(AppManager.Instance.GetProfileItem)
+                    )).Where(p => p != null).ToList();
+                if (childProfiles.Count <= 0)
+                {
+                    ret.Msg = ResUI.CheckServerSettings;
+                    return ret;
+                }
+                switch (node.ConfigType)
+                {
+                    case EConfigType.PolicyGroup:
+                        return await GenerateClientMultipleLoadConfig(childProfiles, profileGroupItem.MultipleLoad);
+                    case EConfigType.ProxyChain:
+                        return await GenerateClientChainConfig(childProfiles);
+                }
+            }
+
             if (node == null
                 || node.Port <= 0)
             {
@@ -75,6 +102,156 @@ public partial class CoreConfigV2rayService(Config config)
     {
         var ret = new RetResult();
 
+        try
+        {
+            if (_config == null)
+            {
+                ret.Msg = ResUI.CheckServerSettings;
+                return ret;
+            }
+
+            ret.Msg = ResUI.InitialConfiguration;
+
+            string result = EmbedUtils.GetEmbedText(Global.V2raySampleClient);
+            string txtOutbound = EmbedUtils.GetEmbedText(Global.V2raySampleOutbound);
+            if (result.IsNullOrEmpty() || txtOutbound.IsNullOrEmpty())
+            {
+                ret.Msg = ResUI.FailedGetDefaultConfiguration;
+                return ret;
+            }
+
+            var v2rayConfig = JsonUtils.Deserialize<V2rayConfig>(result);
+            if (v2rayConfig == null)
+            {
+                ret.Msg = ResUI.FailedGenDefaultConfiguration;
+                return ret;
+            }
+            v2rayConfig.outbounds.RemoveAt(0);
+
+            await GenLog(v2rayConfig);
+            await GenInbounds(v2rayConfig);
+            await GenRouting(v2rayConfig);
+            await GenDns(null, v2rayConfig);
+            await GenStatistic(v2rayConfig);
+
+            var proxyProfiles = new List<ProfileItem>();
+            foreach (var it in selecteds)
+            {
+                if (it.ConfigType is EConfigType.PolicyGroup or EConfigType.ProxyChain)
+                {
+                    var itemGroup = await AppManager.Instance.GetProfileItem(it.IndexId);
+                    proxyProfiles.Add(itemGroup);
+                }
+                if (!Global.XraySupportConfigType.Contains(it.ConfigType))
+                {
+                    continue;
+                }
+                if (it.Port <= 0)
+                {
+                    continue;
+                }
+                var item = await AppManager.Instance.GetProfileItem(it.IndexId);
+                if (item is null)
+                {
+                    continue;
+                }
+                if (it.ConfigType is EConfigType.VMess or EConfigType.VLESS)
+                {
+                    if (item.Id.IsNullOrEmpty() || !Utils.IsGuidByParse(item.Id))
+                    {
+                        continue;
+                    }
+                }
+                if (item.ConfigType == EConfigType.Shadowsocks
+                  && !Global.SsSecuritiesInSingbox.Contains(item.Security))
+                {
+                    continue;
+                }
+                if (item.ConfigType == EConfigType.VLESS && !Global.Flows.Contains(item.Flow))
+                {
+                    continue;
+                }
+
+                //outbound
+                proxyProfiles.Add(item);
+            }
+            if (proxyProfiles.Count <= 0)
+            {
+                ret.Msg = ResUI.FailedGenDefaultConfiguration;
+                return ret;
+            }
+            await GenOutboundsListWithChain(proxyProfiles, v2rayConfig);
+
+            //add balancers
+            await GenObservatory(v2rayConfig, multipleLoad);
+            await GenBalancer(v2rayConfig, multipleLoad);
+
+            var defaultBalancerTag = $"{Global.ProxyTag}{Global.BalancerTagSuffix}";
+
+            //add rule
+            var rules = v2rayConfig.routing.rules;
+            if (rules?.Count > 0)
+            {
+                var balancerTagSet = v2rayConfig.routing.balancers
+                    .Select(b => b.tag)
+                    .ToHashSet();
+
+                foreach (var rule in rules)
+                {
+                    if (rule.outboundTag == null)
+                        continue;
+
+                    if (balancerTagSet.Contains(rule.outboundTag))
+                    {
+                        rule.balancerTag = rule.outboundTag;
+                        rule.outboundTag = null;
+                        continue;
+                    }
+
+                    var outboundWithSuffix = rule.outboundTag + Global.BalancerTagSuffix;
+                    if (balancerTagSet.Contains(outboundWithSuffix))
+                    {
+                        rule.balancerTag = outboundWithSuffix;
+                        rule.outboundTag = null;
+                    }
+                }
+            }
+            if (v2rayConfig.routing.domainStrategy == Global.IPIfNonMatch)
+            {
+                v2rayConfig.routing.rules.Add(new()
+                {
+                    ip = ["0.0.0.0/0", "::/0"],
+                    balancerTag = defaultBalancerTag,
+                    type = "field"
+                });
+            }
+            else
+            {
+                v2rayConfig.routing.rules.Add(new()
+                {
+                    network = "tcp,udp",
+                    balancerTag = defaultBalancerTag,
+                    type = "field"
+                });
+            }
+
+            ret.Success = true;
+
+            ret.Data = await ApplyFullConfigTemplate(v2rayConfig, true);
+            return ret;
+        }
+        catch (Exception ex)
+        {
+            Logging.SaveLog(_tag, ex);
+            ret.Msg = ResUI.FailedGenDefaultConfiguration;
+            return ret;
+        }
+    }
+
+    public async Task<RetResult> GenerateClientChainConfig(List<ProfileItem> selecteds)
+    {
+        var ret = new RetResult();
+
         try
         {
             if (_config == null)
@@ -148,41 +325,7 @@ public partial class CoreConfigV2rayService(Config config)
                 ret.Msg = ResUI.FailedGenDefaultConfiguration;
                 return ret;
             }
-            await GenOutboundsList(proxyProfiles, v2rayConfig);
-
-            //add balancers
-            await GenBalancer(v2rayConfig, multipleLoad);
-
-            var balancer = v2rayConfig.routing.balancers.First();
-
-            //add rule
-            var rules = v2rayConfig.routing.rules.Where(t => t.outboundTag == Global.ProxyTag).ToList();
-            if (rules?.Count > 0)
-            {
-                foreach (var rule in rules)
-                {
-                    rule.outboundTag = null;
-                    rule.balancerTag = balancer.tag;
-                }
-            }
-            if (v2rayConfig.routing.domainStrategy == Global.IPIfNonMatch)
-            {
-                v2rayConfig.routing.rules.Add(new()
-                {
-                    ip = ["0.0.0.0/0", "::/0"],
-                    balancerTag = balancer.tag,
-                    type = "field"
-                });
-            }
-            else
-            {
-                v2rayConfig.routing.rules.Add(new()
-                {
-                    network = "tcp,udp",
-                    balancerTag = balancer.tag,
-                    type = "field"
-                });
-            }
+            await GenChainOutboundsList(proxyProfiles, v2rayConfig);
 
             ret.Success = true;
 

v2rayN/ServiceLib/Services/CoreConfig/V2ray/V2rayBalancerService.cs

@@ -2,24 +2,24 @@ namespace ServiceLib.Services.CoreConfig;
 
 public partial class CoreConfigV2rayService
 {
-    private async Task<int> GenBalancer(V2rayConfig v2rayConfig, EMultipleLoad multipleLoad)
+    private async Task<int> GenObservatory(V2rayConfig v2rayConfig, EMultipleLoad multipleLoad, string baseTagName = Global.ProxyTag)
     {
         if (multipleLoad == EMultipleLoad.LeastPing)
         {
             var observatory = new Observatory4Ray
             {
-                subjectSelector = [Global.ProxyTag],
+                subjectSelector = [baseTagName],
                 probeUrl = AppManager.Instance.Config.SpeedTestItem.SpeedPingTestUrl,
                 probeInterval = "3m",
                 enableConcurrency = true,
             };
             v2rayConfig.observatory = observatory;
         }
-        else if (multipleLoad == EMultipleLoad.LeastLoad)
+        else if (multipleLoad is EMultipleLoad.LeastLoad or EMultipleLoad.Fallback)
         {
             var burstObservatory = new BurstObservatory4Ray
             {
-                subjectSelector = [Global.ProxyTag],
+                subjectSelector = [baseTagName],
                 pingConfig = new()
                 {
                     destination = AppManager.Instance.Config.SpeedTestItem.SpeedPingTestUrl,
@@ -30,6 +30,11 @@ public partial class CoreConfigV2rayService
             };
             v2rayConfig.burstObservatory = burstObservatory;
         }
+        return await Task.FromResult(0);
+    }
+
+    private async Task<string> GenBalancer(V2rayConfig v2rayConfig, EMultipleLoad multipleLoad, string selector = Global.ProxyTag)
+    {
         var strategyType = multipleLoad switch
         {
             EMultipleLoad.Random => "random",
@@ -38,13 +43,22 @@ public partial class CoreConfigV2rayService
             EMultipleLoad.LeastLoad => "leastLoad",
             _ => "roundRobin",
         };
+        var balancerTag = $"{selector}{Global.BalancerTagSuffix}";
         var balancer = new BalancersItem4Ray
         {
-            selector = [Global.ProxyTag],
-            strategy = new() { type = strategyType },
-            tag = $"{Global.ProxyTag}-round",
+            selector = [selector],
+            strategy = new()
+            {
+                type = strategyType,
+                settings = new()
+                {
+                    expected = 1,
+                },
+            },
+            tag = balancerTag,
         };
-        v2rayConfig.routing.balancers = [balancer];
-        return await Task.FromResult(0);
+        v2rayConfig.routing.balancers ??= new();
+        v2rayConfig.routing.balancers.Add(balancer);
+        return await Task.FromResult(balancerTag);
     }
 }

v2rayN/ServiceLib/Services/CoreConfig/V2ray/V2rayOutboundService.cs

@@ -552,7 +552,7 @@ public partial class CoreConfigV2rayService
         return 0;
     }
 
-    private async Task<int> GenOutboundsList(List<ProfileItem> nodes, V2rayConfig v2rayConfig)
+    private async Task<int> GenOutboundsListWithChain(List<ProfileItem> nodes, V2rayConfig v2rayConfig, string baseTagName = Global.ProxyTag)
     {
         try
         {
@@ -577,6 +577,34 @@ public partial class CoreConfigV2rayService
             {
                 index++;
 
+                if (node.ConfigType is EConfigType.PolicyGroup or EConfigType.ProxyChain)
+                {
+                    ProfileGroupItemManager.Instance.TryGet(node.IndexId, out var profileGroupItem);
+                    if (profileGroupItem == null || profileGroupItem.ChildItems.IsNullOrEmpty())
+                    {
+                        continue;
+                    }
+                    var childProfiles = (await Task.WhenAll(
+                            Utils.String2List(profileGroupItem.ChildItems)
+                            .Where(p => !p.IsNullOrEmpty())
+                            .Select(AppManager.Instance.GetProfileItem)
+                        )).Where(p => p != null).ToList();
+                    if (childProfiles.Count <= 0)
+                    {
+                        continue;
+                    }
+                    var childBaseTagName = $"{baseTagName}-{index}";
+                    var ret = node.ConfigType switch
+                    {
+                        EConfigType.PolicyGroup =>
+                            await GenOutboundsListWithChain(childProfiles, v2rayConfig, childBaseTagName),
+                        EConfigType.ProxyChain =>
+                            await GenChainOutboundsList(childProfiles, v2rayConfig, childBaseTagName),
+                        _ => throw new NotImplementedException()
+                    };
+                    continue;
+                }
+
                 // Handle proxy chain
                 string? prevTag = null;
                 var currentOutbound = JsonUtils.Deserialize<Outbounds4Ray>(txtOutbound);
@@ -590,7 +618,7 @@ public partial class CoreConfigV2rayService
 
                 // current proxy
                 await GenOutbound(node, currentOutbound);
-                currentOutbound.tag = $"{Global.ProxyTag}-{index}";
+                currentOutbound.tag = $"{baseTagName}-{index}";
 
                 if (!node.Subid.IsNullOrEmpty())
                 {
@@ -606,7 +634,7 @@ public partial class CoreConfigV2rayService
                         {
                             var prevOutbound = JsonUtils.Deserialize<Outbounds4Ray>(txtOutbound);
                             await GenOutbound(prevNode, prevOutbound);
-                            prevTag = $"prev-{Global.ProxyTag}-{++prevIndex}";
+                            prevTag = $"prev-{baseTagName}-{++prevIndex}";
                             prevOutbound.tag = prevTag;
                             prevOutbounds.Add(prevOutbound);
                         }
@@ -692,4 +720,78 @@ public partial class CoreConfigV2rayService
         }
         return null;
     }
+
+    private async Task<int> GenOutboundsList(List<ProfileItem> nodes, V2rayConfig v2rayConfig, string baseTagName = Global.ProxyTag)
+    {
+        var resultOutbounds = new List<Outbounds4Ray>();
+        for (var i = 0; i < nodes.Count; i++)
+        {
+            var node = nodes[i];
+            var txtOutbound = EmbedUtils.GetEmbedText(Global.V2raySampleOutbound);
+            if (txtOutbound.IsNullOrEmpty())
+            {
+                break;
+            }
+            var outbound = JsonUtils.Deserialize<Outbounds4Ray>(txtOutbound);
+            var result = await GenOutbound(node, outbound);
+            if (result != 0)
+            {
+                break;
+            }
+            outbound.tag = baseTagName + (i + 1).ToString();
+            resultOutbounds.Add(outbound);
+        }
+        v2rayConfig.outbounds ??= new();
+        resultOutbounds.AddRange(v2rayConfig.outbounds);
+        v2rayConfig.outbounds = resultOutbounds;
+        return await Task.FromResult(0);
+    }
+
+    private async Task<int> GenChainOutboundsList(List<ProfileItem> nodes, V2rayConfig v2RayConfig, string baseTagName = Global.ProxyTag)
+    {
+        // Based on actual network flow instead of data packets
+        var nodesReverse = nodes.AsEnumerable().Reverse().ToList();
+        var resultOutbounds = new List<Outbounds4Ray>();
+        for (var i = 0; i < nodesReverse.Count; i++)
+        {
+            var node = nodesReverse[i];
+            var txtOutbound = EmbedUtils.GetEmbedText(Global.V2raySampleOutbound);
+            if (txtOutbound.IsNullOrEmpty())
+            {
+                break;
+            }
+            var outbound = JsonUtils.Deserialize<Outbounds4Ray>(txtOutbound);
+            var result = await GenOutbound(node, outbound);
+
+            if (result != 0)
+            {
+                break;
+            }
+
+            if (i == 0)
+            {
+                outbound.tag = baseTagName;
+            }
+            else
+            {
+                // avoid v2ray observe
+                outbound.tag = "chain-" + baseTagName + i.ToString();
+            }
+
+            if (i != nodesReverse.Count - 1)
+            {
+                outbound.streamSettings.sockopt = new()
+                {
+                    dialerProxy = "chain-" + baseTagName + (i + 1).ToString()
+                };
+            }
+
+            resultOutbounds.Add(outbound);
+        }
+        v2RayConfig.outbounds ??= new();
+        resultOutbounds.AddRange(v2RayConfig.outbounds);
+        v2RayConfig.outbounds = resultOutbounds;
+
+        return await Task.FromResult(0);
+    }
 }

v2rayN/ServiceLib/Services/CoreConfig/V2ray/V2rayRoutingService.cs

@@ -125,8 +125,10 @@ public partial class CoreConfigV2rayService
         }
 
         var node = await AppManager.Instance.GetProfileItemViaRemarks(outboundTag);
+
         if (node == null
-            || !Global.XraySupportConfigType.Contains(node.ConfigType))
+            || (!Global.XraySupportConfigType.Contains(node.ConfigType)
+            && node.ConfigType is not (EConfigType.PolicyGroup or EConfigType.ProxyChain)))
         {
             return Global.ProxyTag;
         }
@@ -137,6 +139,42 @@ public partial class CoreConfigV2rayService
             return tag;
         }
 
+        if (node.ConfigType is EConfigType.PolicyGroup or EConfigType.ProxyChain)
+        {
+            ProfileGroupItemManager.Instance.TryGet(node.IndexId, out var profileGroupItem);
+            if (profileGroupItem == null || profileGroupItem.ChildItems.IsNullOrEmpty())
+            {
+                return Global.ProxyTag;
+            }
+            var childProfiles = (await Task.WhenAll(
+                    Utils.String2List(profileGroupItem.ChildItems)
+                    .Where(p => !p.IsNullOrEmpty())
+                    .Select(AppManager.Instance.GetProfileItem)
+                )).Where(p => p != null).ToList();
+            if (childProfiles.Count <= 0)
+            {
+                return Global.ProxyTag;
+            }
+            var childBaseTagName = $"{Global.ProxyTag}-{node.IndexId}";
+            var ret = node.ConfigType switch
+            {
+                EConfigType.PolicyGroup =>
+                    await GenOutboundsListWithChain(childProfiles, v2rayConfig, childBaseTagName),
+                EConfigType.ProxyChain =>
+                    await GenChainOutboundsList(childProfiles, v2rayConfig, childBaseTagName),
+                _ => throw new NotImplementedException()
+            };
+            if (node.ConfigType == EConfigType.PolicyGroup)
+            {
+                await GenBalancer(v2rayConfig, profileGroupItem.MultipleLoad, childBaseTagName);
+            }
+            if (ret == 0)
+            {
+                return childBaseTagName;
+            }
+            return Global.ProxyTag;
+        }
+
         var txtOutbound = EmbedUtils.GetEmbedText(Global.V2raySampleOutbound);
         var outbound = JsonUtils.Deserialize<Outbounds4Ray>(txtOutbound);
         await GenOutbound(node, outbound);

v2rayN/ServiceLib/ViewModels/AddGroupServerViewModel.cs

@@ -0,0 +1,225 @@
+using System.Reactive;
+using DynamicData.Binding;
+using ReactiveUI;
+using ReactiveUI.Fody.Helpers;
+
+namespace ServiceLib.ViewModels;
+
+public class AddGroupServerViewModel : MyReactiveObject
+{
+    [Reactive]
+    public ProfileItem SelectedSource { get; set; }
+
+    [Reactive]
+    public ProfileItem SelectedChild { get; set; }
+
+    [Reactive]
+    public IList<ProfileItem> SelectedChildren { get; set; }
+
+    [Reactive]
+    public string? CoreType { get; set; }
+
+    [Reactive]
+    public string? PolicyGroupType { get; set; }
+
+    public IObservableCollection<ProfileItem> ChildItemsObs { get; } = new ObservableCollectionExtended<ProfileItem>();
+
+    //public ReactiveCommand<Unit, Unit> AddCmd { get; }
+    public ReactiveCommand<Unit, Unit> RemoveCmd { get; }
+    public ReactiveCommand<Unit, Unit> MoveTopCmd { get; }
+    public ReactiveCommand<Unit, Unit> MoveUpCmd { get; }
+    public ReactiveCommand<Unit, Unit> MoveDownCmd { get; }
+    public ReactiveCommand<Unit, Unit> MoveBottomCmd { get; }
+
+    public ReactiveCommand<Unit, Unit> SaveCmd { get; }
+
+    public AddGroupServerViewModel(ProfileItem profileItem, Func<EViewAction, object?, Task<bool>>? updateView)
+    {
+        _config = AppManager.Instance.Config;
+        _updateView = updateView;
+
+        var canEditRemove = this.WhenAnyValue(
+            x => x.SelectedChild,
+            SelectedChild => SelectedChild != null && !SelectedChild.Remarks.IsNullOrEmpty());
+
+        RemoveCmd = ReactiveCommand.CreateFromTask(async () =>
+        {
+            await ChildRemoveAsync();
+        }, canEditRemove);
+        MoveTopCmd = ReactiveCommand.CreateFromTask(async () =>
+        {
+            await MoveServer(EMove.Top);
+        }, canEditRemove);
+        MoveUpCmd = ReactiveCommand.CreateFromTask(async () =>
+        {
+            await MoveServer(EMove.Up);
+        }, canEditRemove);
+        MoveDownCmd = ReactiveCommand.CreateFromTask(async () =>
+        {
+            await MoveServer(EMove.Down);
+        }, canEditRemove);
+        MoveBottomCmd = ReactiveCommand.CreateFromTask(async () =>
+        {
+            await MoveServer(EMove.Bottom);
+        }, canEditRemove);
+        SaveCmd = ReactiveCommand.CreateFromTask(async () =>
+        {
+            await SaveServerAsync();
+        });
+
+        SelectedSource = profileItem.IndexId.IsNullOrEmpty() ? profileItem : JsonUtils.DeepCopy(profileItem);
+
+        CoreType = (SelectedSource?.CoreType ?? ECoreType.Xray).ToString();
+
+        ProfileGroupItemManager.Instance.TryGet(profileItem.IndexId, out var profileGroup);
+        PolicyGroupType = (profileGroup?.MultipleLoad ?? EMultipleLoad.LeastPing) switch
+        {
+            EMultipleLoad.LeastPing => ResUI.TbLeastPing,
+            EMultipleLoad.Fallback => ResUI.TbFallback,
+            EMultipleLoad.Random => ResUI.TbRandom,
+            EMultipleLoad.RoundRobin => ResUI.TbRoundRobin,
+            EMultipleLoad.LeastLoad => ResUI.TbLeastLoad,
+            _ => ResUI.TbLeastPing,
+        };
+
+        _ = Init();
+    }
+
+    public async Task Init()
+    {
+        var childItemMulti = ProfileGroupItemManager.Instance.GetOrCreateAndMarkDirty(SelectedSource?.IndexId);
+        if (childItemMulti != null)
+        {
+            var childIndexIds = childItemMulti.ChildItems.IsNullOrEmpty() ? new List<string>() : Utils.String2List(childItemMulti.ChildItems);
+            foreach (var item in childIndexIds)
+            {
+                var child = await AppManager.Instance.GetProfileItem(item);
+                if (child == null)
+                {
+                    continue;
+                }
+                ChildItemsObs.Add(child);
+            }
+        }
+    }
+
+    public async Task ChildRemoveAsync()
+    {
+        if (SelectedChild == null || SelectedChild.IndexId.IsNullOrEmpty())
+        {
+            NoticeManager.Instance.Enqueue(ResUI.PleaseSelectServer);
+            return;
+        }
+        foreach (var it in SelectedChildren ?? [SelectedChild])
+        {
+            if (it != null)
+            {
+                ChildItemsObs.Remove(it);
+            }
+        }
+        await Task.CompletedTask;
+    }
+
+    public async Task MoveServer(EMove eMove)
+    {
+        if (SelectedChild == null || SelectedChild.IndexId.IsNullOrEmpty())
+        {
+            NoticeManager.Instance.Enqueue(ResUI.PleaseSelectServer);
+            return;
+        }
+        var index = ChildItemsObs.IndexOf(SelectedChild);
+        if (index < 0)
+        {
+            return;
+        }
+        var selectedChild = JsonUtils.DeepCopy(SelectedChild);
+        switch (eMove)
+        {
+            case EMove.Top:
+                if (index == 0)
+                {
+                    return;
+                }
+                ChildItemsObs.RemoveAt(index);
+                ChildItemsObs.Insert(0, selectedChild);
+                break;
+            case EMove.Up:
+                if (index == 0)
+                {
+                    return;
+                }
+                ChildItemsObs.RemoveAt(index);
+                ChildItemsObs.Insert(index - 1, selectedChild);
+                break;
+            case EMove.Down:
+                if (index == ChildItemsObs.Count - 1)
+                {
+                    return;
+                }
+                ChildItemsObs.RemoveAt(index);
+                ChildItemsObs.Insert(index + 1, selectedChild);
+                break;
+            case EMove.Bottom:
+                if (index == ChildItemsObs.Count - 1)
+                {
+                    return;
+                }
+                ChildItemsObs.RemoveAt(index);
+                ChildItemsObs.Add(selectedChild);
+                break;
+            default:
+                break;
+        }
+        await Task.CompletedTask;
+    }
+
+    private async Task SaveServerAsync()
+    {
+        var remarks = SelectedSource.Remarks;
+        if (remarks.IsNullOrEmpty())
+        {
+            NoticeManager.Instance.Enqueue(ResUI.PleaseFillRemarks);
+            return;
+        }
+        if (ChildItemsObs.Count == 0)
+        {
+            NoticeManager.Instance.Enqueue(ResUI.PleaseAddAtLeastOneServer);
+            return;
+        }
+        SelectedSource.CoreType = CoreType.IsNullOrEmpty() ? ECoreType.Xray : (ECoreType)Enum.Parse(typeof(ECoreType), CoreType);
+        if (SelectedSource.CoreType is not (ECoreType.Xray or ECoreType.sing_box) ||
+            SelectedSource.ConfigType is not (EConfigType.ProxyChain or EConfigType.PolicyGroup))
+        {
+            return;
+        }
+        var childIndexIds = new List<string>();
+        foreach (var item in ChildItemsObs)
+        {
+            if (!item.IndexId.IsNullOrEmpty())
+            {
+                childIndexIds.Add(item.IndexId);
+            }
+        }
+        SelectedSource.Address = Utils.List2String(childIndexIds);
+        var profileGroup = ProfileGroupItemManager.Instance.GetOrCreateAndMarkDirty(SelectedSource.IndexId);
+        profileGroup.ChildItems = Utils.List2String(childIndexIds);
+        profileGroup.MultipleLoad = PolicyGroupType switch
+        {
+            var s when s == ResUI.TbLeastPing => EMultipleLoad.LeastPing,
+            var s when s == ResUI.TbFallback => EMultipleLoad.Fallback,
+            var s when s == ResUI.TbRandom => EMultipleLoad.Random,
+            var s when s == ResUI.TbRoundRobin => EMultipleLoad.RoundRobin,
+            var s when s == ResUI.TbLeastLoad => EMultipleLoad.LeastLoad,
+            _ => EMultipleLoad.LeastPing,
+        };
+        if (await ConfigHandler.AddGroupServerCommon(_config, SelectedSource, profileGroup, true) == 0)
+        {
+            NoticeManager.Instance.Enqueue(ResUI.OperationSuccess);
+            _updateView?.Invoke(EViewAction.CloseWindow, null);
+        }
+        else
+        {
+            NoticeManager.Instance.Enqueue(ResUI.OperationFailed);
+        }
+    }
+}

v2rayN/ServiceLib/ViewModels/CheckUpdateViewModel.cs

@@ -38,7 +38,7 @@ public class CheckUpdateViewModel : MyReactiveObject
         this.WhenAnyValue(
         x => x.EnableCheckPreReleaseUpdate,
         y => y == true)
-            .Subscribe(c => { _config.CheckUpdateItem.CheckPreReleaseUpdate = EnableCheckPreReleaseUpdate; });
+            .Subscribe(c => _config.CheckUpdateItem.CheckPreReleaseUpdate = EnableCheckPreReleaseUpdate);
 
         RefreshCheckUpdateItems();
     }
@@ -158,11 +158,8 @@ public class CheckUpdateViewModel : MyReactiveObject
                 UpdatedPlusPlus(_geo, "");
             }
         }
-        await (new UpdateService()).UpdateGeoFileAll(_config, _updateUI)
-            .ContinueWith(t =>
-            {
-                UpdatedPlusPlus(_geo, "");
-            });
+        await new UpdateService().UpdateGeoFileAll(_config, _updateUI)
+            .ContinueWith(t => UpdatedPlusPlus(_geo, ""));
     }
 
     private async Task CheckUpdateN(bool preRelease)
@@ -176,11 +173,8 @@ public class CheckUpdateViewModel : MyReactiveObject
                 UpdatedPlusPlus(_v2rayN, msg);
             }
         }
-        await (new UpdateService()).CheckUpdateGuiN(_config, _updateUI, preRelease)
-            .ContinueWith(t =>
-            {
-                UpdatedPlusPlus(_v2rayN, "");
-            });
+        await new UpdateService().CheckUpdateGuiN(_config, _updateUI, preRelease)
+            .ContinueWith(t => UpdatedPlusPlus(_v2rayN, ""));
     }
 
     private async Task CheckUpdateCore(CheckUpdateModel model, bool preRelease)
@@ -196,11 +190,8 @@ public class CheckUpdateViewModel : MyReactiveObject
             }
         }
         var type = (ECoreType)Enum.Parse(typeof(ECoreType), model.CoreType);
-        await (new UpdateService()).CheckUpdateCore(type, _config, _updateUI, preRelease)
-            .ContinueWith(t =>
-            {
-                UpdatedPlusPlus(model.CoreType, "");
-            });
+        await new UpdateService().CheckUpdateCore(type, _config, _updateUI, preRelease)
+            .ContinueWith(t => UpdatedPlusPlus(model.CoreType, ""));
     }
 
     private async Task UpdateFinished()
@@ -311,7 +302,7 @@ public class CheckUpdateViewModel : MyReactiveObject
 
             if (Utils.IsNonWindows())
             {
-                var filesList = (new DirectoryInfo(toPath)).GetFiles().Select(u => u.FullName).ToList();
+                var filesList = new DirectoryInfo(toPath).GetFiles().Select(u => u.FullName).ToList();
                 foreach (var file in filesList)
                 {
                     await Utils.SetLinuxChmod(Path.Combine(toPath, item.CoreType.ToLower()));

v2rayN/ServiceLib/ViewModels/MainWindowViewModel.cs

@@ -23,6 +23,8 @@ public class MainWindowViewModel : MyReactiveObject
     public ReactiveCommand<Unit, Unit> AddWireguardServerCmd { get; }
     public ReactiveCommand<Unit, Unit> AddAnytlsServerCmd { get; }
     public ReactiveCommand<Unit, Unit> AddCustomServerCmd { get; }
+    public ReactiveCommand<Unit, Unit> AddPolicyGroupServerCmd { get; }
+    public ReactiveCommand<Unit, Unit> AddProxyChainServerCmd { get; }
     public ReactiveCommand<Unit, Unit> AddServerViaClipboardCmd { get; }
     public ReactiveCommand<Unit, Unit> AddServerViaScanCmd { get; }
     public ReactiveCommand<Unit, Unit> AddServerViaImageCmd { get; }
@@ -122,6 +124,14 @@ public class MainWindowViewModel : MyReactiveObject
         {
             await AddServerAsync(true, EConfigType.Custom);
         });
+        AddPolicyGroupServerCmd = ReactiveCommand.CreateFromTask(async () =>
+        {
+            await AddServerAsync(true, EConfigType.PolicyGroup);
+        });
+        AddProxyChainServerCmd = ReactiveCommand.CreateFromTask(async () =>
+        {
+            await AddServerAsync(true, EConfigType.ProxyChain);
+        });
         AddServerViaClipboardCmd = ReactiveCommand.CreateFromTask(async () =>
         {
             await AddServerViaClipboardAsync(null);
@@ -228,6 +238,7 @@ public class MainWindowViewModel : MyReactiveObject
         await ConfigHandler.InitBuiltinDNS(_config);
         await ConfigHandler.InitBuiltinFullConfigTemplate(_config);
         await ProfileExManager.Instance.Init();
+        await ProfileGroupItemManager.Instance.Init();
         await CoreManager.Instance.Init(_config, UpdateHandler);
         TaskManager.Instance.RegUpdateTask(_config, UpdateTaskHandler);
 
@@ -322,6 +333,10 @@ public class MainWindowViewModel : MyReactiveObject
         {
             ret = await _updateView?.Invoke(EViewAction.AddServer2Window, item);
         }
+        else if (eConfigType is EConfigType.PolicyGroup or EConfigType.ProxyChain)
+        {
+            ret = await _updateView?.Invoke(EViewAction.AddGroupServerWindow, item);
+        }
         else
         {
             ret = await _updateView?.Invoke(EViewAction.AddServerWindow, item);

v2rayN/ServiceLib/ViewModels/ProfilesViewModel.cs

@@ -53,11 +53,13 @@ public class ProfilesViewModel : MyReactiveObject
     public ReactiveCommand<Unit, Unit> CopyServerCmd { get; }
     public ReactiveCommand<Unit, Unit> SetDefaultServerCmd { get; }
     public ReactiveCommand<Unit, Unit> ShareServerCmd { get; }
-    public ReactiveCommand<Unit, Unit> SetDefaultMultipleServerXrayRandomCmd { get; }
-    public ReactiveCommand<Unit, Unit> SetDefaultMultipleServerXrayRoundRobinCmd { get; }
-    public ReactiveCommand<Unit, Unit> SetDefaultMultipleServerXrayLeastPingCmd { get; }
-    public ReactiveCommand<Unit, Unit> SetDefaultMultipleServerXrayLeastLoadCmd { get; }
-    public ReactiveCommand<Unit, Unit> SetDefaultMultipleServerSingBoxLeastPingCmd { get; }
+    public ReactiveCommand<Unit, Unit> GenGroupMultipleServerXrayRandomCmd { get; }
+    public ReactiveCommand<Unit, Unit> GenGroupMultipleServerXrayRoundRobinCmd { get; }
+    public ReactiveCommand<Unit, Unit> GenGroupMultipleServerXrayLeastPingCmd { get; }
+    public ReactiveCommand<Unit, Unit> GenGroupMultipleServerXrayLeastLoadCmd { get; }
+    public ReactiveCommand<Unit, Unit> GenGroupMultipleServerXrayFallbackCmd { get; }
+    public ReactiveCommand<Unit, Unit> GenGroupMultipleServerSingBoxLeastPingCmd { get; }
+    public ReactiveCommand<Unit, Unit> GenGroupMultipleServerSingBoxFallbackCmd { get; }
 
     //servers move
     public ReactiveCommand<Unit, Unit> MoveTopCmd { get; }
@@ -139,25 +141,33 @@ public class ProfilesViewModel : MyReactiveObject
         {
             await ShareServerAsync();
         }, canEditRemove);
-        SetDefaultMultipleServerXrayRandomCmd = ReactiveCommand.CreateFromTask(async () =>
+        GenGroupMultipleServerXrayRandomCmd = ReactiveCommand.CreateFromTask(async () =>
         {
-            await SetDefaultMultipleServer(ECoreType.Xray, EMultipleLoad.Random);
+            await GenGroupMultipleServer(ECoreType.Xray, EMultipleLoad.Random);
         }, canEditRemove);
-        SetDefaultMultipleServerXrayRoundRobinCmd = ReactiveCommand.CreateFromTask(async () =>
+        GenGroupMultipleServerXrayRoundRobinCmd = ReactiveCommand.CreateFromTask(async () =>
         {
-            await SetDefaultMultipleServer(ECoreType.Xray, EMultipleLoad.RoundRobin);
+            await GenGroupMultipleServer(ECoreType.Xray, EMultipleLoad.RoundRobin);
         }, canEditRemove);
-        SetDefaultMultipleServerXrayLeastPingCmd = ReactiveCommand.CreateFromTask(async () =>
+        GenGroupMultipleServerXrayLeastPingCmd = ReactiveCommand.CreateFromTask(async () =>
         {
-            await SetDefaultMultipleServer(ECoreType.Xray, EMultipleLoad.LeastPing);
+            await GenGroupMultipleServer(ECoreType.Xray, EMultipleLoad.LeastPing);
         }, canEditRemove);
-        SetDefaultMultipleServerXrayLeastLoadCmd = ReactiveCommand.CreateFromTask(async () =>
+        GenGroupMultipleServerXrayLeastLoadCmd = ReactiveCommand.CreateFromTask(async () =>
         {
-            await SetDefaultMultipleServer(ECoreType.Xray, EMultipleLoad.LeastLoad);
+            await GenGroupMultipleServer(ECoreType.Xray, EMultipleLoad.LeastLoad);
         }, canEditRemove);
-        SetDefaultMultipleServerSingBoxLeastPingCmd = ReactiveCommand.CreateFromTask(async () =>
+        GenGroupMultipleServerXrayFallbackCmd = ReactiveCommand.CreateFromTask(async () =>
         {
-            await SetDefaultMultipleServer(ECoreType.sing_box, EMultipleLoad.LeastPing);
+            await GenGroupMultipleServer(ECoreType.Xray, EMultipleLoad.Fallback);
+        }, canEditRemove);
+        GenGroupMultipleServerSingBoxLeastPingCmd = ReactiveCommand.CreateFromTask(async () =>
+        {
+            await GenGroupMultipleServer(ECoreType.sing_box, EMultipleLoad.LeastPing);
+        }, canEditRemove);
+        GenGroupMultipleServerSingBoxFallbackCmd = ReactiveCommand.CreateFromTask(async () =>
+        {
+            await GenGroupMultipleServer(ECoreType.sing_box, EMultipleLoad.Fallback);
         }, canEditRemove);
 
         //servers move
@@ -491,6 +501,10 @@ public class ProfilesViewModel : MyReactiveObject
         {
             ret = await _updateView?.Invoke(EViewAction.AddServer2Window, item);
         }
+        else if (eConfigType is EConfigType.PolicyGroup or EConfigType.ProxyChain)
+        {
+            ret = await _updateView?.Invoke(EViewAction.AddGroupServerWindow, item);
+        }
         else
         {
             ret = await _updateView?.Invoke(EViewAction.AddServerWindow, item);
@@ -606,7 +620,7 @@ public class ProfilesViewModel : MyReactiveObject
         await _updateView?.Invoke(EViewAction.ShareServer, url);
     }
 
-    private async Task SetDefaultMultipleServer(ECoreType coreType, EMultipleLoad multipleLoad)
+    private async Task GenGroupMultipleServer(ECoreType coreType, EMultipleLoad multipleLoad)
     {
         var lstSelected = await GetProfileItems(true);
         if (lstSelected == null)
@@ -614,7 +628,7 @@ public class ProfilesViewModel : MyReactiveObject
             return;
         }
 
-        var ret = await ConfigHandler.AddCustomServer4Multiple(_config, lstSelected, coreType, multipleLoad);
+        var ret = await ConfigHandler.AddGroupServer4Multiple(_config, lstSelected, coreType, multipleLoad, SelectedSub?.Id);
         if (ret.Success != true)
         {
             NoticeManager.Instance.Enqueue(ResUI.OperationFailed);

v2rayN/v2rayN.Desktop/Views/AddGroupServerWindow.axaml

@@ -0,0 +1,151 @@
+<Window
+    x:Class="v2rayN.Desktop.Views.AddGroupServerWindow"
+    xmlns="https://github.com/avaloniaui"
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+    xmlns:resx="clr-namespace:ServiceLib.Resx;assembly=ServiceLib"
+    xmlns:vms="clr-namespace:ServiceLib.ViewModels;assembly=ServiceLib"
+    Title="{x:Static resx:ResUI.menuServers}"
+    Width="900"
+    Height="700"
+    x:DataType="vms:AddGroupServerViewModel"
+    ShowInTaskbar="False"
+    WindowStartupLocation="CenterScreen"
+    mc:Ignorable="d">
+
+    <DockPanel Margin="{StaticResource Margin8}">
+        <StackPanel
+            Margin="{StaticResource Margin4}"
+            HorizontalAlignment="Center"
+            DockPanel.Dock="Bottom"
+            Orientation="Horizontal">
+            <Button
+                x:Name="btnSave"
+                Width="100"
+                Content="{x:Static resx:ResUI.TbConfirm}"
+                IsDefault="True" />
+            <Button
+                x:Name="btnCancel"
+                Width="100"
+                Margin="{StaticResource MarginLr8}"
+                Content="{x:Static resx:ResUI.TbCancel}"
+                IsCancel="True" />
+        </StackPanel>
+
+        <Grid DockPanel.Dock="Top" RowDefinitions="Auto,*,Auto,Auto,Auto,Auto,Auto,Auto,Auto">
+
+            <Grid
+                Grid.Row="0"
+                ColumnDefinitions="180,Auto,Auto"
+                RowDefinitions="Auto,Auto,Auto,Auto,Auto">
+                <TextBlock
+                    Grid.Row="0"
+                    Grid.Column="0"
+                    Margin="{StaticResource Margin4}"
+                    Text="{x:Static resx:ResUI.menuServers}" />
+
+                <TextBlock
+                    Grid.Row="1"
+                    Grid.Column="0"
+                    Margin="{StaticResource Margin4}"
+                    VerticalAlignment="Center"
+                    Text="{x:Static resx:ResUI.TbRemarks}" />
+                <TextBox
+                    x:Name="txtRemarks"
+                    Grid.Row="1"
+                    Grid.Column="1"
+                    Width="400"
+                    Margin="{StaticResource Margin4}" />
+
+                <TextBlock
+                    Grid.Row="2"
+                    Grid.Column="0"
+                    Margin="{StaticResource Margin4}"
+                    VerticalAlignment="Center"
+                    Text="{x:Static resx:ResUI.TbCoreType}" />
+                <ComboBox
+                    x:Name="cmbCoreType"
+                    Grid.Row="2"
+                    Grid.Column="1"
+                    Width="200"
+                    Margin="{StaticResource Margin4}" />
+
+                <Grid
+                    x:Name="gridPolicyGroup"
+                    Grid.Row="3"
+                    Grid.Column="0"
+                    Grid.ColumnSpan="3"
+                    ColumnDefinitions="180,Auto,Auto">
+                    <TextBlock
+                        Grid.Column="0"
+                        Margin="{StaticResource Margin4}"
+                        VerticalAlignment="Center"
+                        Text="{x:Static resx:ResUI.TbPolicyGroupType}" />
+                    <ComboBox
+                        x:Name="cmbPolicyGroupType"
+                        Grid.Column="1"
+                        Width="200"
+                        Margin="{StaticResource Margin4}" />
+                </Grid>
+            </Grid>
+        </Grid>
+        <TabControl>
+            <TabItem HorizontalAlignment="Left" Header="{x:Static resx:ResUI.menuServerList}">
+                <DataGrid
+                    x:Name="lstChild"
+                    Grid.Row="1"
+                    AutoGenerateColumns="False"
+                    Background="Transparent"
+                    BorderThickness="1"
+                    CanUserReorderColumns="False"
+                    CanUserResizeColumns="True"
+                    CanUserSortColumns="False"
+                    GridLinesVisibility="All"
+                    HeadersVisibility="Column"
+                    IsReadOnly="True"
+                    ItemsSource="{Binding ChildItemsObs}"
+                    SelectionMode="Extended">
+                    <DataGrid.ContextMenu>
+                        <ContextMenu>
+                            <MenuItem x:Name="menuAddChildServer" Header="{x:Static resx:ResUI.menuAddChildServer}" />
+                            <MenuItem x:Name="menuRemoveChildServer" Header="{x:Static resx:ResUI.menuRemoveChildServer}" />
+                            <MenuItem x:Name="menuSelectAllChild" Header="{x:Static resx:ResUI.menuSelectAll}" />
+                            <Separator />
+                            <MenuItem x:Name="menuMoveTop" Header="{x:Static resx:ResUI.menuMoveTop}" />
+                            <MenuItem x:Name="menuMoveUp" Header="{x:Static resx:ResUI.menuMoveUp}" />
+                            <MenuItem x:Name="menuMoveDown" Header="{x:Static resx:ResUI.menuMoveDown}" />
+                            <MenuItem x:Name="menuMoveBottom" Header="{x:Static resx:ResUI.menuMoveBottom}" />
+                        </ContextMenu>
+                    </DataGrid.ContextMenu>
+                    <DataGrid.Columns>
+                        <DataGridTextColumn
+                            Width="150"
+                            Binding="{Binding ConfigType}"
+                            Header="{x:Static resx:ResUI.LvServiceType}" />
+                        <DataGridTextColumn
+                            Width="150"
+                            Binding="{Binding Remarks}"
+                            Header="{x:Static resx:ResUI.LvRemarks}" />
+                        <DataGridTextColumn
+                            Width="120"
+                            Binding="{Binding Address}"
+                            Header="{x:Static resx:ResUI.LvAddress}" />
+                        <DataGridTextColumn
+                            Width="100"
+                            Binding="{Binding Port}"
+                            Header="{x:Static resx:ResUI.LvPort}" />
+                        <DataGridTextColumn
+                            Width="100"
+                            Binding="{Binding Network}"
+                            Header="{x:Static resx:ResUI.LvTransportProtocol}" />
+                        <DataGridTextColumn
+                            Width="100"
+                            Binding="{Binding StreamSecurity}"
+                            Header="{x:Static resx:ResUI.LvTLS}" />
+                    </DataGrid.Columns>
+                </DataGrid>
+            </TabItem>
+        </TabControl>
+    </DockPanel>
+</Window>

v2rayN/v2rayN.Desktop/Views/AddGroupServerWindow.axaml.cs

@@ -0,0 +1,166 @@
+using System.Reactive.Disposables;
+using Avalonia.Controls;
+using Avalonia.Input;
+using Avalonia.Interactivity;
+using DynamicData;
+using ReactiveUI;
+using v2rayN.Desktop.Base;
+
+namespace v2rayN.Desktop.Views;
+
+public partial class AddGroupServerWindow : WindowBase<AddGroupServerViewModel>
+{
+    public AddGroupServerWindow()
+    {
+        InitializeComponent();
+    }
+
+    public AddGroupServerWindow(ProfileItem profileItem)
+    {
+        InitializeComponent();
+
+        this.Loaded += Window_Loaded;
+        btnCancel.Click += (s, e) => this.Close();
+        lstChild.SelectionChanged += LstChild_SelectionChanged;
+
+        ViewModel = new AddGroupServerViewModel(profileItem, UpdateViewHandler);
+
+        cmbCoreType.ItemsSource = Global.CoreTypes;
+        cmbPolicyGroupType.ItemsSource = new List<string>
+        {
+            ResUI.TbLeastPing,
+            ResUI.TbFallback,
+            ResUI.TbRandom,
+            ResUI.TbRoundRobin,
+            ResUI.TbLeastLoad,
+        };
+
+        switch (profileItem.ConfigType)
+        {
+            case EConfigType.PolicyGroup:
+                this.Title = ResUI.TbConfigTypePolicyGroup;
+                break;
+            case EConfigType.ProxyChain:
+                this.Title = ResUI.TbConfigTypeProxyChain;
+                gridPolicyGroup.IsVisible = false;
+                break;
+        }
+
+        this.WhenActivated(disposables =>
+        {
+            this.Bind(ViewModel, vm => vm.SelectedSource.Remarks, v => v.txtRemarks.Text).DisposeWith(disposables);
+            this.Bind(ViewModel, vm => vm.CoreType, v => v.cmbCoreType.SelectedValue).DisposeWith(disposables);
+            this.Bind(ViewModel, vm => vm.PolicyGroupType, v => v.cmbPolicyGroupType.SelectedValue).DisposeWith(disposables);
+
+            this.OneWayBind(ViewModel, vm => vm.ChildItemsObs, v => v.lstChild.ItemsSource).DisposeWith(disposables);
+            this.Bind(ViewModel, vm => vm.SelectedChild, v => v.lstChild.SelectedItem).DisposeWith(disposables);
+
+            this.BindCommand(ViewModel, vm => vm.RemoveCmd, v => v.menuRemoveChildServer).DisposeWith(disposables);
+            this.BindCommand(ViewModel, vm => vm.MoveTopCmd, v => v.menuMoveTop).DisposeWith(disposables);
+            this.BindCommand(ViewModel, vm => vm.MoveUpCmd, v => v.menuMoveUp).DisposeWith(disposables);
+            this.BindCommand(ViewModel, vm => vm.MoveDownCmd, v => v.menuMoveDown).DisposeWith(disposables);
+            this.BindCommand(ViewModel, vm => vm.MoveBottomCmd, v => v.menuMoveBottom).DisposeWith(disposables);
+
+            this.BindCommand(ViewModel, vm => vm.SaveCmd, v => v.btnSave).DisposeWith(disposables);
+        });
+
+        // Context menu actions that require custom logic (Add, SelectAll)
+        menuAddChildServer.Click += MenuAddChild_Click;
+        menuSelectAllChild.Click += (s, e) => lstChild.SelectAll();
+
+        // Keyboard shortcuts when focus is within grid
+        this.AddHandler(KeyDownEvent, AddGroupServerWindow_KeyDown, RoutingStrategies.Tunnel);
+        lstChild.LoadingRow += LstChild_LoadingRow;
+    }
+
+    private void LstChild_LoadingRow(object? sender, DataGridRowEventArgs e)
+    {
+        e.Row.Header = $" {e.Row.Index + 1}";
+    }
+
+    private async Task<bool> UpdateViewHandler(EViewAction action, object? obj)
+    {
+        switch (action)
+        {
+            case EViewAction.CloseWindow:
+                this.Close(true);
+                break;
+        }
+        return await Task.FromResult(true);
+    }
+
+    private void Window_Loaded(object? sender, RoutedEventArgs e)
+    {
+        txtRemarks.Focus();
+    }
+
+    private void AddGroupServerWindow_KeyDown(object? sender, KeyEventArgs e)
+    {
+        if (!lstChild.IsKeyboardFocusWithin)
+            return;
+
+        if ((e.KeyModifiers & (KeyModifiers.Control | KeyModifiers.Meta)) != 0)
+        {
+            if (e.Key == Key.A)
+            {
+                lstChild.SelectAll();
+                e.Handled = true;
+            }
+        }
+        else
+        {
+            switch (e.Key)
+            {
+                case Key.T:
+                    ViewModel?.MoveServer(EMove.Top);
+                    e.Handled = true;
+                    break;
+                case Key.U:
+                    ViewModel?.MoveServer(EMove.Up);
+                    e.Handled = true;
+                    break;
+                case Key.D:
+                    ViewModel?.MoveServer(EMove.Down);
+                    e.Handled = true;
+                    break;
+                case Key.B:
+                    ViewModel?.MoveServer(EMove.Bottom);
+                    e.Handled = true;
+                    break;
+                case Key.Delete:
+                    ViewModel?.ChildRemoveAsync();
+                    e.Handled = true;
+                    break;
+            }
+        }
+    }
+
+    private async void MenuAddChild_Click(object? sender, RoutedEventArgs e)
+    {
+        var selectWindow = new ProfilesSelectWindow();
+        if (ViewModel?.SelectedSource?.ConfigType == EConfigType.PolicyGroup)
+        {
+            selectWindow.SetConfigTypeFilter(new[] { EConfigType.Custom }, exclude: true);
+        }
+        else
+        {
+            selectWindow.SetConfigTypeFilter(new[] { EConfigType.Custom, EConfigType.PolicyGroup, EConfigType.ProxyChain }, exclude: true);
+        }
+        selectWindow.AllowMultiSelect(true);
+        var result = await selectWindow.ShowDialog<bool?>(this);
+        if (result == true)
+        {
+            var profiles = await selectWindow.ProfileItems;
+            ViewModel?.ChildItemsObs.AddRange(profiles);
+        }
+    }
+
+    private void LstChild_SelectionChanged(object? sender, SelectionChangedEventArgs e)
+    {
+        if (ViewModel != null)
+        {
+            ViewModel.SelectedChildren = lstChild.SelectedItems.Cast<ProfileItem>().ToList();
+        }
+    }
+
+}

v2rayN/v2rayN.Desktop/Views/MainWindow.axaml

@@ -35,6 +35,8 @@
                         <MenuItem x:Name="menuAddServerViaScan" Header="{x:Static resx:ResUI.menuAddServerViaScan}" />
                         <MenuItem x:Name="menuAddServerViaImage" Header="{x:Static resx:ResUI.menuAddServerViaImage}" />
                         <MenuItem x:Name="menuAddCustomServer" Header="{x:Static resx:ResUI.menuAddCustomServer}" />
+                        <MenuItem x:Name="menuAddPolicyGroupServer" Header="{x:Static resx:ResUI.menuAddPolicyGroupServer}" />
+                        <MenuItem x:Name="menuAddProxyChainServer" Header="{x:Static resx:ResUI.menuAddProxyChainServer}" />
                         <Separator />
                         <MenuItem x:Name="menuAddVmessServer" Header="{x:Static resx:ResUI.menuAddVmessServer}" />
                         <MenuItem x:Name="menuAddVlessServer" Header="{x:Static resx:ResUI.menuAddVlessServer}" />

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

@@ -85,6 +85,8 @@ public partial class MainWindow : WindowBase<MainWindowViewModel>
             this.BindCommand(ViewModel, vm => vm.AddWireguardServerCmd, v => v.menuAddWireguardServer).DisposeWith(disposables);
             this.BindCommand(ViewModel, vm => vm.AddAnytlsServerCmd, v => v.menuAddAnytlsServer).DisposeWith(disposables);
             this.BindCommand(ViewModel, vm => vm.AddCustomServerCmd, v => v.menuAddCustomServer).DisposeWith(disposables);
+            this.BindCommand(ViewModel, vm => vm.AddPolicyGroupServerCmd, v => v.menuAddPolicyGroupServer).DisposeWith(disposables);
+            this.BindCommand(ViewModel, vm => vm.AddProxyChainServerCmd, v => v.menuAddProxyChainServer).DisposeWith(disposables);
             this.BindCommand(ViewModel, vm => vm.AddServerViaClipboardCmd, v => v.menuAddServerViaClipboard).DisposeWith(disposables);
             this.BindCommand(ViewModel, vm => vm.AddServerViaScanCmd, v => v.menuAddServerViaScan).DisposeWith(disposables);
             this.BindCommand(ViewModel, vm => vm.AddServerViaImageCmd, v => v.menuAddServerViaImage).DisposeWith(disposables);
@@ -203,6 +205,11 @@ public partial class MainWindow : WindowBase<MainWindowViewModel>
                     return false;
                 return await new AddServer2Window((ProfileItem)obj).ShowDialog<bool>(this);
 
+            case EViewAction.AddGroupServerWindow:
+                if (obj is null)
+                    return false;
+                return await new AddGroupServerWindow((ProfileItem)obj).ShowDialog<bool>(this);
+
             case EViewAction.DNSSettingWindow:
                 return await new DNSSettingWindow().ShowDialog<bool>(this);
 

v2rayN/v2rayN.Desktop/Views/ProfilesView.axaml

@@ -99,13 +99,14 @@
                         <MenuItem x:Name="menuCopyServer" Header="{x:Static resx:ResUI.menuCopyServer}" />
                         <MenuItem x:Name="menuShareServer" Header="{x:Static resx:ResUI.menuShareServer}" />
                         <Separator />
-                        <MenuItem Header="{x:Static resx:ResUI.menuSetDefaultMultipleServer}">
-                            <MenuItem x:Name="menuSetDefaultMultipleServerXrayRandom" Header="{x:Static resx:ResUI.menuSetDefaultMultipleServerXrayRandom}" />
-                            <MenuItem x:Name="menuSetDefaultMultipleServerXrayRoundRobin" Header="{x:Static resx:ResUI.menuSetDefaultMultipleServerXrayRoundRobin}" />
-                            <MenuItem x:Name="menuSetDefaultMultipleServerXrayLeastPing" Header="{x:Static resx:ResUI.menuSetDefaultMultipleServerXrayLeastPing}" />
-                            <MenuItem x:Name="menuSetDefaultMultipleServerXrayLeastLoad" Header="{x:Static resx:ResUI.menuSetDefaultMultipleServerXrayLeastLoad}" />
+                        <MenuItem Header="{x:Static resx:ResUI.menuGenGroupMultipleServer}">
+                            <MenuItem x:Name="menuGenGroupMultipleServerXrayRandom" Header="{x:Static resx:ResUI.menuGenGroupMultipleServerXrayRandom}" />
+                            <MenuItem x:Name="menuGenGroupMultipleServerXrayRoundRobin" Header="{x:Static resx:ResUI.menuGenGroupMultipleServerXrayRoundRobin}" />
+                            <MenuItem x:Name="menuGenGroupMultipleServerXrayLeastPing" Header="{x:Static resx:ResUI.menuGenGroupMultipleServerXrayLeastPing}" />
+                            <MenuItem x:Name="menuGenGroupMultipleServerXrayLeastLoad" Header="{x:Static resx:ResUI.menuGenGroupMultipleServerXrayLeastLoad}" />
                             <Separator />
-                            <MenuItem x:Name="menuSetDefaultMultipleServerSingBoxLeastPing" Header="{x:Static resx:ResUI.menuSetDefaultMultipleServerSingBoxLeastPing}" />
+                            <MenuItem x:Name="menuGenGroupMultipleServerSingBoxLeastPing" Header="{x:Static resx:ResUI.menuGenGroupMultipleServerSingBoxLeastPing}" />
+                            <MenuItem x:Name="menuGenGroupMultipleServerSingBoxFallback" Header="{x:Static resx:ResUI.menuGenGroupMultipleServerSingBoxFallback}" />
                         </MenuItem>
                         <Separator />
                         <MenuItem x:Name="menuMixedTestServer" Header="{x:Static resx:ResUI.menuMixedTestServer}" />

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

@@ -68,11 +68,12 @@ public partial class ProfilesView : ReactiveUserControl<ProfilesViewModel>
             this.BindCommand(ViewModel, vm => vm.CopyServerCmd, v => v.menuCopyServer).DisposeWith(disposables);
             this.BindCommand(ViewModel, vm => vm.SetDefaultServerCmd, v => v.menuSetDefaultServer).DisposeWith(disposables);
             this.BindCommand(ViewModel, vm => vm.ShareServerCmd, v => v.menuShareServer).DisposeWith(disposables);
-            this.BindCommand(ViewModel, vm => vm.SetDefaultMultipleServerXrayRandomCmd, v => v.menuSetDefaultMultipleServerXrayRandom).DisposeWith(disposables);
-            this.BindCommand(ViewModel, vm => vm.SetDefaultMultipleServerXrayRoundRobinCmd, v => v.menuSetDefaultMultipleServerXrayRoundRobin).DisposeWith(disposables);
-            this.BindCommand(ViewModel, vm => vm.SetDefaultMultipleServerXrayLeastPingCmd, v => v.menuSetDefaultMultipleServerXrayLeastPing).DisposeWith(disposables);
-            this.BindCommand(ViewModel, vm => vm.SetDefaultMultipleServerXrayLeastLoadCmd, v => v.menuSetDefaultMultipleServerXrayLeastLoad).DisposeWith(disposables);
-            this.BindCommand(ViewModel, vm => vm.SetDefaultMultipleServerSingBoxLeastPingCmd, v => v.menuSetDefaultMultipleServerSingBoxLeastPing).DisposeWith(disposables);
+            this.BindCommand(ViewModel, vm => vm.GenGroupMultipleServerXrayRandomCmd, v => v.menuGenGroupMultipleServerXrayRandom).DisposeWith(disposables);
+            this.BindCommand(ViewModel, vm => vm.GenGroupMultipleServerXrayRoundRobinCmd, v => v.menuGenGroupMultipleServerXrayRoundRobin).DisposeWith(disposables);
+            this.BindCommand(ViewModel, vm => vm.GenGroupMultipleServerXrayLeastPingCmd, v => v.menuGenGroupMultipleServerXrayLeastPing).DisposeWith(disposables);
+            this.BindCommand(ViewModel, vm => vm.GenGroupMultipleServerXrayLeastLoadCmd, v => v.menuGenGroupMultipleServerXrayLeastLoad).DisposeWith(disposables);
+            this.BindCommand(ViewModel, vm => vm.GenGroupMultipleServerSingBoxLeastPingCmd, v => v.menuGenGroupMultipleServerSingBoxLeastPing).DisposeWith(disposables);
+            this.BindCommand(ViewModel, vm => vm.GenGroupMultipleServerSingBoxFallbackCmd, v => v.menuGenGroupMultipleServerSingBoxFallback).DisposeWith(disposables);
 
             //servers move
             //this.OneWayBind(ViewModel, vm => vm.SubItems, v => v.cmbMoveToGroup.ItemsSource).DisposeWith(disposables);
@@ -169,6 +170,11 @@ public partial class ProfilesView : ReactiveUserControl<ProfilesViewModel>
                     return false;
                 return await new AddServer2Window((ProfileItem)obj).ShowDialog<bool>(_window);
 
+            case EViewAction.AddGroupServerWindow:
+                if (obj is null)
+                    return false;
+                return await new AddGroupServerWindow((ProfileItem)obj).ShowDialog<bool>(_window);
+
             case EViewAction.ShareServer:
                 if (obj is null)
                     return false;

v2rayN/v2rayN.Desktop/Views/QrcodeView.axaml

@@ -4,19 +4,25 @@
     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
     xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
     xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
-    d:DesignHeight="480"
-    d:DesignWidth="400"
+    xmlns:sys="clr-namespace:System;assembly=netstandard"
+    d:DesignHeight="600"
+    d:DesignWidth="600"
     mc:Ignorable="d">
+
+    <UserControl.Resources>
+        <sys:Double x:Key="QrcodeWidth">500</sys:Double>
+    </UserControl.Resources>
+
     <Grid Margin="32" RowDefinitions="Auto,Auto">
         <Image
             Name="imgQrcode"
-            Width="300"
-            Height="300" />
+            Width="{StaticResource QrcodeWidth}"
+            Height="{StaticResource QrcodeWidth}" />
 
         <TextBox
             x:Name="txtContent"
             Grid.Row="1"
-            Width="300"
+            Width="{StaticResource QrcodeWidth}"
             MaxHeight="100"
             Margin="{StaticResource MarginTb8}"
             VerticalAlignment="Center"

v2rayN/v2rayN.Desktop/Views/QrcodeView.axaml.cs

@@ -23,8 +23,16 @@ public partial class QrcodeView : UserControl
 
     private Bitmap? GetQRCode(string? url)
     {
-        var bytes = QRCodeUtils.GenQRCode(url);
-        return ByteToBitmap(bytes);
+        try
+        {
+            var bytes = QRCodeUtils.GenQRCode(url);
+            return ByteToBitmap(bytes);
+        }
+        catch (Exception ex)
+        {
+            Logging.SaveLog("GetQRCode", ex);
+            return null;
+        }
     }
 
     private Bitmap? ByteToBitmap(byte[]? bytes)

v2rayN/v2rayN.Desktop/Views/SubEditWindow.axaml.cs

@@ -63,7 +63,7 @@ public partial class SubEditWindow : WindowBase<SubEditViewModel>
     private async void BtnSelectPrevProfile_Click(object? sender, RoutedEventArgs e)
     {
         var selectWindow = new ProfilesSelectWindow();
-        selectWindow.SetConfigTypeFilter(new[] { EConfigType.Custom }, exclude: true);
+        selectWindow.SetConfigTypeFilter(new[] { EConfigType.Custom, EConfigType.PolicyGroup, EConfigType.ProxyChain }, exclude: true);
         var result = await selectWindow.ShowDialog<bool?>(this);
         if (result == true)
         {
@@ -78,7 +78,7 @@ public partial class SubEditWindow : WindowBase<SubEditViewModel>
     private async void BtnSelectNextProfile_Click(object? sender, RoutedEventArgs e)
     {
         var selectWindow = new ProfilesSelectWindow();
-        selectWindow.SetConfigTypeFilter(new[] { EConfigType.Custom }, exclude: true);
+        selectWindow.SetConfigTypeFilter(new[] { EConfigType.Custom, EConfigType.PolicyGroup, EConfigType.ProxyChain }, exclude: true);
         var result = await selectWindow.ShowDialog<bool?>(this);
         if (result == true)
         {

v2rayN/v2rayN.slnx

@@ -0,0 +1,24 @@
+<Solution>
+  <Folder Name="/GitHub Action/">
+    <File Path="../.github/workflows/build-all.yml" />
+    <File Path="../.github/workflows/build-linux.yml" />
+    <File Path="../.github/workflows/build-osx.yml" />
+    <File Path="../.github/workflows/build-windows-desktop.yml" />
+    <File Path="../.github/workflows/build-windows.yml" />
+    <File Path="../.github/workflows/winget-publish.yml" />
+    <File Path="../package-appimage.sh" />
+    <File Path="../package-debian.sh" />
+    <File Path="../package-osx.sh" />
+    <File Path="../package-release-zip.sh" />
+    <File Path="../pkg2appimage.yml" />
+  </Folder>
+  <Folder Name="/Solution Files/">
+    <File Path="Directory.Build.props" />
+    <File Path="Directory.Packages.props" />
+  </Folder>
+  <Project Path="AmazTool/AmazTool.csproj" />
+  <Project Path="GlobalHotKeys/src/GlobalHotKeys/GlobalHotKeys.csproj" />
+  <Project Path="ServiceLib/ServiceLib.csproj" />
+  <Project Path="v2rayN.Desktop/v2rayN.Desktop.csproj" />
+  <Project Path="v2rayN/v2rayN.csproj" />
+</Solution>

v2rayN/v2rayN/Common/QRCodeUtils.cs

@@ -20,8 +20,9 @@ public class QRCodeUtils
             var qrCodeImage = ServiceLib.Common.QRCodeUtils.GenQRCode(strContent);
             return qrCodeImage is null ? null : ByteToImage(qrCodeImage);
         }
-        catch
+        catch (Exception ex)
         {
+            Logging.SaveLog("GetQRCode", ex);
             return null;
         }
     }
@@ -32,8 +33,8 @@ public class QRCodeUtils
         {
             GetDpi(window, out var dpiX, out var dpiY);
 
-            var left = (int)(SystemParameters.WorkArea.Left);
-            var top = (int)(SystemParameters.WorkArea.Top);
+            var left = (int)SystemParameters.WorkArea.Left;
+            var top = (int)SystemParameters.WorkArea.Top;
             var width = (int)(SystemParameters.WorkArea.Width / dpiX);
             var height = (int)(SystemParameters.WorkArea.Height / dpiY);
 

v2rayN/v2rayN/Views/AddGroupServerWindow.xaml

@@ -0,0 +1,213 @@
+<base:WindowBase
+    x:Class="v2rayN.Views.AddGroupServerWindow"
+    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+    xmlns:base="clr-namespace:v2rayN.Base"
+    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+    xmlns:materialDesign="http://materialdesigninxaml.net/winfx/xaml/themes"
+    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+    xmlns:reactiveui="http://reactiveui.net"
+    xmlns:resx="clr-namespace:ServiceLib.Resx;assembly=ServiceLib"
+    xmlns:vms="clr-namespace:ServiceLib.ViewModels;assembly=ServiceLib"
+    Title="{x:Static resx:ResUI.menuServers}"
+    Width="900"
+    Height="700"
+    x:TypeArguments="vms:AddGroupServerViewModel"
+    ResizeMode="CanResize"
+    ShowInTaskbar="False"
+    Style="{StaticResource WindowGlobal}"
+    WindowStartupLocation="CenterScreen"
+    mc:Ignorable="d">
+
+    <DockPanel Margin="{StaticResource Margin8}">
+        <StackPanel
+            Margin="{StaticResource Margin4}"
+            HorizontalAlignment="Center"
+            DockPanel.Dock="Bottom"
+            Orientation="Horizontal">
+            <Button
+                x:Name="btnSave"
+                Width="100"
+                Content="{x:Static resx:ResUI.TbConfirm}"
+                IsDefault="True"
+                Style="{StaticResource DefButton}" />
+            <Button
+                x:Name="btnCancel"
+                Width="100"
+                Margin="{StaticResource MarginLeftRight8}"
+                Content="{x:Static resx:ResUI.TbCancel}"
+                IsCancel="true"
+                Style="{StaticResource DefButton}" />
+        </StackPanel>
+        <Grid DockPanel.Dock="Top">
+            <Grid.RowDefinitions>
+                <RowDefinition Height="Auto" />
+                <RowDefinition Height="*" />
+                <RowDefinition Height="Auto" />
+                <RowDefinition Height="Auto" />
+                <RowDefinition Height="Auto" />
+                <RowDefinition Height="Auto" />
+                <RowDefinition Height="Auto" />
+                <RowDefinition Height="Auto" />
+                <RowDefinition Height="Auto" />
+            </Grid.RowDefinitions>
+
+            <Grid Grid.Row="0">
+                <Grid.RowDefinitions>
+                    <RowDefinition Height="Auto" />
+                    <RowDefinition Height="Auto" />
+                    <RowDefinition Height="Auto" />
+                    <RowDefinition Height="Auto" />
+                    <RowDefinition Height="Auto" />
+                </Grid.RowDefinitions>
+                <Grid.ColumnDefinitions>
+                    <ColumnDefinition Width="180" />
+                    <ColumnDefinition Width="Auto" />
+                    <ColumnDefinition Width="Auto" />
+                </Grid.ColumnDefinitions>
+
+                <TextBlock
+                    Grid.Row="0"
+                    Grid.Column="0"
+                    Margin="{StaticResource Margin4}"
+                    Style="{StaticResource ModuleTitle}"
+                    Text="{x:Static resx:ResUI.menuServers}" />
+
+                <TextBlock
+                    Grid.Row="1"
+                    Grid.Column="0"
+                    Margin="{StaticResource Margin4}"
+                    VerticalAlignment="Center"
+                    Style="{StaticResource ToolbarTextBlock}"
+                    Text="{x:Static resx:ResUI.TbRemarks}" />
+                <TextBox
+                    x:Name="txtRemarks"
+                    Grid.Row="1"
+                    Grid.Column="1"
+                    Width="400"
+                    Margin="{StaticResource Margin4}"
+                    Style="{StaticResource DefTextBox}" />
+
+                <TextBlock
+                    Grid.Row="2"
+                    Grid.Column="0"
+                    Margin="{StaticResource Margin4}"
+                    VerticalAlignment="Center"
+                    Style="{StaticResource ToolbarTextBlock}"
+                    Text="{x:Static resx:ResUI.TbCoreType}" />
+                <ComboBox
+                    x:Name="cmbCoreType"
+                    Grid.Row="2"
+                    Grid.Column="1"
+                    Width="200"
+                    Margin="{StaticResource Margin4}"
+                    materialDesign:HintAssist.Hint="{x:Static resx:ResUI.TbCoreType}"
+                    Style="{StaticResource DefComboBox}" />
+
+                <Grid
+                    x:Name="gridPolicyGroup"
+                    Grid.Row="3"
+                    Grid.Column="0"
+                    Grid.ColumnSpan="3">
+                    <Grid.ColumnDefinitions>
+                        <ColumnDefinition Width="180" />
+                        <ColumnDefinition Width="Auto" />
+                        <ColumnDefinition Width="Auto" />
+                    </Grid.ColumnDefinitions>
+                    <TextBlock
+                        Grid.Row="3"
+                        Grid.Column="0"
+                        Margin="{StaticResource Margin4}"
+                        VerticalAlignment="Center"
+                        Style="{StaticResource ToolbarTextBlock}"
+                        Text="{x:Static resx:ResUI.TbPolicyGroupType}" />
+                    <ComboBox
+                        x:Name="cmbPolicyGroupType"
+                        Grid.Row="3"
+                        Grid.Column="1"
+                        Width="200"
+                        Margin="{StaticResource Margin4}"
+                        materialDesign:HintAssist.Hint="{x:Static resx:ResUI.TbPolicyGroupType}"
+                        Style="{StaticResource DefComboBox}" />
+                </Grid>
+            </Grid>
+        </Grid>
+        <TabControl>
+            <TabItem HorizontalAlignment="Left" Header="{x:Static resx:ResUI.menuServerList}">
+                <DataGrid
+                    x:Name="lstChild"
+                    AutoGenerateColumns="False"
+                    BorderThickness="1"
+                    CanUserAddRows="False"
+                    CanUserResizeRows="False"
+                    CanUserSortColumns="False"
+                    EnableRowVirtualization="True"
+                    GridLinesVisibility="All"
+                    HeadersVisibility="Column"
+                    IsReadOnly="True"
+                    Style="{StaticResource DefDataGrid}">
+                    <DataGrid.ContextMenu>
+                        <ContextMenu Style="{StaticResource DefContextMenu}">
+                            <MenuItem
+                                x:Name="menuAddChildServer"
+                                Height="{StaticResource MenuItemHeight}"
+                                Click="MenuAddChild_Click"
+                                Header="{x:Static resx:ResUI.menuAddChildServer}" />
+                            <MenuItem
+                                x:Name="menuRemoveChildServer"
+                                Height="{StaticResource MenuItemHeight}"
+                                Header="{x:Static resx:ResUI.menuRemoveChildServer}" />
+                            <MenuItem
+                                x:Name="menuSelectAllChild"
+                                Height="{StaticResource MenuItemHeight}"
+                                Header="{x:Static resx:ResUI.menuSelectAll}" />
+                            <Separator />
+                            <MenuItem
+                                x:Name="menuMoveTop"
+                                Height="{StaticResource MenuItemHeight}"
+                                Header="{x:Static resx:ResUI.menuMoveTop}" />
+                            <MenuItem
+                                x:Name="menuMoveUp"
+                                Height="{StaticResource MenuItemHeight}"
+                                Header="{x:Static resx:ResUI.menuMoveUp}" />
+                            <MenuItem
+                                x:Name="menuMoveDown"
+                                Height="{StaticResource MenuItemHeight}"
+                                Header="{x:Static resx:ResUI.menuMoveDown}" />
+                            <MenuItem
+                                x:Name="menuMoveBottom"
+                                Height="{StaticResource MenuItemHeight}"
+                                Header="{x:Static resx:ResUI.menuMoveBottom}" />
+                        </ContextMenu>
+                    </DataGrid.ContextMenu>
+                    <DataGrid.Columns>
+                        <DataGridTextColumn
+                            Width="150"
+                            Binding="{Binding ConfigType}"
+                            Header="{x:Static resx:ResUI.LvServiceType}" />
+                        <DataGridTextColumn
+                            Width="150"
+                            Binding="{Binding Remarks}"
+                            Header="{x:Static resx:ResUI.LvRemarks}" />
+                        <DataGridTextColumn
+                            Width="120"
+                            Binding="{Binding Address}"
+                            Header="{x:Static resx:ResUI.LvAddress}" />
+                        <DataGridTextColumn
+                            Width="100"
+                            Binding="{Binding Port}"
+                            Header="{x:Static resx:ResUI.LvPort}" />
+                        <DataGridTextColumn
+                            Width="100"
+                            Binding="{Binding Network}"
+                            Header="{x:Static resx:ResUI.LvTransportProtocol}" />
+                        <DataGridTextColumn
+                            Width="100"
+                            Binding="{Binding StreamSecurity}"
+                            Header="{x:Static resx:ResUI.LvTLS}" />
+                    </DataGrid.Columns>
+                </DataGrid>
+            </TabItem>
+        </TabControl>
+    </DockPanel>
+</base:WindowBase>

v2rayN/v2rayN/Views/AddGroupServerWindow.xaml.cs

@@ -0,0 +1,147 @@
+using System.Reactive.Disposables;
+using System.Windows;
+using System.Windows.Input;
+using DynamicData;
+using ReactiveUI;
+
+namespace v2rayN.Views;
+
+public partial class AddGroupServerWindow
+{
+    public AddGroupServerWindow(ProfileItem profileItem)
+    {
+        InitializeComponent();
+
+        this.Owner = Application.Current.MainWindow;
+        this.Loaded += Window_Loaded;
+        this.PreviewKeyDown += AddGroupServerWindow_PreviewKeyDown;
+        lstChild.SelectionChanged += LstChild_SelectionChanged;
+        menuSelectAllChild.Click += MenuSelectAllChild_Click;
+
+        ViewModel = new AddGroupServerViewModel(profileItem, UpdateViewHandler);
+
+        cmbCoreType.ItemsSource = Global.CoreTypes;
+        cmbPolicyGroupType.ItemsSource = new List<string>
+        {
+            ResUI.TbLeastPing,
+            ResUI.TbFallback,
+            ResUI.TbRandom,
+            ResUI.TbRoundRobin,
+            ResUI.TbLeastLoad,
+        };
+
+        switch (profileItem.ConfigType)
+        {
+            case EConfigType.PolicyGroup:
+                this.Title = ResUI.TbConfigTypePolicyGroup;
+                break;
+
+            case EConfigType.ProxyChain:
+                this.Title = ResUI.TbConfigTypeProxyChain;
+                gridPolicyGroup.Visibility = Visibility.Collapsed;
+                break;
+        }
+
+        this.WhenActivated(disposables =>
+        {
+            this.Bind(ViewModel, vm => vm.SelectedSource.Remarks, v => v.txtRemarks.Text).DisposeWith(disposables);
+            this.Bind(ViewModel, vm => vm.CoreType, v => v.cmbCoreType.Text).DisposeWith(disposables);
+            this.Bind(ViewModel, vm => vm.PolicyGroupType, v => v.cmbPolicyGroupType.Text).DisposeWith(disposables);
+
+            this.OneWayBind(ViewModel, vm => vm.ChildItemsObs, v => v.lstChild.ItemsSource).DisposeWith(disposables);
+            this.Bind(ViewModel, vm => vm.SelectedChild, v => v.lstChild.SelectedItem).DisposeWith(disposables);
+
+            this.BindCommand(ViewModel, vm => vm.RemoveCmd, v => v.menuRemoveChildServer).DisposeWith(disposables);
+            this.BindCommand(ViewModel, vm => vm.MoveTopCmd, v => v.menuMoveTop).DisposeWith(disposables);
+            this.BindCommand(ViewModel, vm => vm.MoveUpCmd, v => v.menuMoveUp).DisposeWith(disposables);
+            this.BindCommand(ViewModel, vm => vm.MoveDownCmd, v => v.menuMoveDown).DisposeWith(disposables);
+            this.BindCommand(ViewModel, vm => vm.MoveBottomCmd, v => v.menuMoveBottom).DisposeWith(disposables);
+
+            this.BindCommand(ViewModel, vm => vm.SaveCmd, v => v.btnSave).DisposeWith(disposables);
+        });
+    }
+
+    private async Task<bool> UpdateViewHandler(EViewAction action, object? obj)
+    {
+        switch (action)
+        {
+            case EViewAction.CloseWindow:
+                this.DialogResult = true;
+                break;
+        }
+        return await Task.FromResult(true);
+    }
+
+    private void Window_Loaded(object sender, RoutedEventArgs e)
+    {
+        txtRemarks.Focus();
+    }
+
+    private void AddGroupServerWindow_PreviewKeyDown(object sender, KeyEventArgs e)
+    {
+        if (!lstChild.IsKeyboardFocusWithin)
+            return;
+        if (Keyboard.IsKeyDown(Key.LeftCtrl) || Keyboard.IsKeyDown(Key.RightCtrl))
+        {
+            if (e.Key == Key.A)
+            {
+                lstChild.SelectAll();
+            }
+        }
+        else
+        {
+            if (e.Key == Key.T)
+            {
+                ViewModel?.MoveServer(EMove.Top);
+            }
+            else if (e.Key == Key.U)
+            {
+                ViewModel?.MoveServer(EMove.Up);
+            }
+            else if (e.Key == Key.D)
+            {
+                ViewModel?.MoveServer(EMove.Down);
+            }
+            else if (e.Key == Key.B)
+            {
+                ViewModel?.MoveServer(EMove.Bottom);
+            }
+            else if (e.Key == Key.Delete)
+            {
+                ViewModel?.ChildRemoveAsync();
+            }
+        }
+    }
+
+    private async void MenuAddChild_Click(object sender, RoutedEventArgs e)
+    {
+        var selectWindow = new ProfilesSelectWindow();
+        if (ViewModel?.SelectedSource?.ConfigType == EConfigType.PolicyGroup)
+        {
+            selectWindow.SetConfigTypeFilter(new[] { EConfigType.Custom }, exclude: true);
+        }
+        else
+        {
+            selectWindow.SetConfigTypeFilter(new[] { EConfigType.Custom, EConfigType.PolicyGroup, EConfigType.ProxyChain }, exclude: true);
+        }
+        selectWindow.AllowMultiSelect(true);
+        if (selectWindow.ShowDialog() == true)
+        {
+            var profiles = await selectWindow.ProfileItems;
+            ViewModel?.ChildItemsObs.AddRange(profiles);
+        }
+    }
+
+    private void LstChild_SelectionChanged(object sender, System.Windows.Controls.SelectionChangedEventArgs e)
+    {
+        if (ViewModel != null)
+        {
+            ViewModel.SelectedChildren = lstChild.SelectedItems.Cast<ProfileItem>().ToList();
+        }
+    }
+
+    private void MenuSelectAllChild_Click(object sender, RoutedEventArgs e)
+    {
+        lstChild.SelectAll();
+    }
+}

v2rayN/v2rayN/Views/MainWindow.xaml

@@ -71,6 +71,14 @@
                                     x:Name="menuAddCustomServer"
                                     Height="{StaticResource MenuItemHeight}"
                                     Header="{x:Static resx:ResUI.menuAddCustomServer}" />
+                                <MenuItem
+                                    x:Name="menuAddPolicyGroupServer"
+                                    Height="{StaticResource MenuItemHeight}"
+                                    Header="{x:Static resx:ResUI.menuAddPolicyGroupServer}" />
+                                <MenuItem
+                                    x:Name="menuAddProxyChainServer"
+                                    Height="{StaticResource MenuItemHeight}"
+                                    Header="{x:Static resx:ResUI.menuAddProxyChainServer}" />
                                 <Separator Margin="-40,5" />
                                 <MenuItem
                                     x:Name="menuAddVmessServer"

v2rayN/v2rayN/Views/MainWindow.xaml.cs

@@ -82,6 +82,8 @@ public partial class MainWindow
             this.BindCommand(ViewModel, vm => vm.AddWireguardServerCmd, v => v.menuAddWireguardServer).DisposeWith(disposables);
             this.BindCommand(ViewModel, vm => vm.AddAnytlsServerCmd, v => v.menuAddAnytlsServer).DisposeWith(disposables);
             this.BindCommand(ViewModel, vm => vm.AddCustomServerCmd, v => v.menuAddCustomServer).DisposeWith(disposables);
+            this.BindCommand(ViewModel, vm => vm.AddPolicyGroupServerCmd, v => v.menuAddPolicyGroupServer).DisposeWith(disposables);
+            this.BindCommand(ViewModel, vm => vm.AddProxyChainServerCmd, v => v.menuAddProxyChainServer).DisposeWith(disposables);
             this.BindCommand(ViewModel, vm => vm.AddServerViaClipboardCmd, v => v.menuAddServerViaClipboard).DisposeWith(disposables);
             this.BindCommand(ViewModel, vm => vm.AddServerViaScanCmd, v => v.menuAddServerViaScan).DisposeWith(disposables);
             this.BindCommand(ViewModel, vm => vm.AddServerViaImageCmd, v => v.menuAddServerViaImage).DisposeWith(disposables);
@@ -192,6 +194,11 @@ public partial class MainWindow
                     return false;
                 return (new AddServer2Window((ProfileItem)obj)).ShowDialog() ?? false;
 
+            case EViewAction.AddGroupServerWindow:
+                if (obj is null)
+                    return false;
+                return (new AddGroupServerWindow((ProfileItem)obj)).ShowDialog() ?? false;
+
             case EViewAction.DNSSettingWindow:
                 return (new DNSSettingWindow().ShowDialog() ?? false);
 

v2rayN/v2rayN/Views/ProfilesView.xaml

@@ -125,28 +125,32 @@
                             Height="{StaticResource MenuItemHeight}"
                             Header="{x:Static resx:ResUI.menuShareServer}" />
                         <Separator />
-                        <MenuItem Header="{x:Static resx:ResUI.menuSetDefaultMultipleServer}">
+                        <MenuItem Header="{x:Static resx:ResUI.menuGenGroupMultipleServer}">
                             <MenuItem
-                                x:Name="menuSetDefaultMultipleServerXrayRandom"
+                                x:Name="menuGenGroupMultipleServerXrayRandom"
                                 Height="{StaticResource MenuItemHeight}"
-                                Header="{x:Static resx:ResUI.menuSetDefaultMultipleServerXrayRandom}" />
+                                Header="{x:Static resx:ResUI.menuGenGroupMultipleServerXrayRandom}" />
                             <MenuItem
-                                x:Name="menuSetDefaultMultipleServerXrayRoundRobin"
+                                x:Name="menuGenGroupMultipleServerXrayRoundRobin"
                                 Height="{StaticResource MenuItemHeight}"
-                                Header="{x:Static resx:ResUI.menuSetDefaultMultipleServerXrayRoundRobin}" />
+                                Header="{x:Static resx:ResUI.menuGenGroupMultipleServerXrayRoundRobin}" />
                             <MenuItem
-                                x:Name="menuSetDefaultMultipleServerXrayLeastPing"
+                                x:Name="menuGenGroupMultipleServerXrayLeastPing"
                                 Height="{StaticResource MenuItemHeight}"
-                                Header="{x:Static resx:ResUI.menuSetDefaultMultipleServerXrayLeastPing}" />
+                                Header="{x:Static resx:ResUI.menuGenGroupMultipleServerXrayLeastPing}" />
                             <MenuItem
-                                x:Name="menuSetDefaultMultipleServerXrayLeastLoad"
+                                x:Name="menuGenGroupMultipleServerXrayLeastLoad"
                                 Height="{StaticResource MenuItemHeight}"
-                                Header="{x:Static resx:ResUI.menuSetDefaultMultipleServerXrayLeastLoad}" />
+                                Header="{x:Static resx:ResUI.menuGenGroupMultipleServerXrayLeastLoad}" />
                             <Separator />
                             <MenuItem
-                                x:Name="menuSetDefaultMultipleServerSingBoxLeastPing"
+                                x:Name="menuGenGroupMultipleServerSingBoxLeastPing"
                                 Height="{StaticResource MenuItemHeight}"
-                                Header="{x:Static resx:ResUI.menuSetDefaultMultipleServerSingBoxLeastPing}" />
+                                Header="{x:Static resx:ResUI.menuGenGroupMultipleServerSingBoxLeastPing}" />
+                            <MenuItem
+                                x:Name="menuGenGroupMultipleServerSingBoxFallback"
+                                Height="{StaticResource MenuItemHeight}"
+                                Header="{x:Static resx:ResUI.menuGenGroupMultipleServerSingBoxFallback}" />
                         </MenuItem>
                         <Separator />
                         <MenuItem

v2rayN/v2rayN/Views/ProfilesView.xaml.cs

@@ -62,11 +62,12 @@ public partial class ProfilesView
             this.BindCommand(ViewModel, vm => vm.CopyServerCmd, v => v.menuCopyServer).DisposeWith(disposables);
             this.BindCommand(ViewModel, vm => vm.SetDefaultServerCmd, v => v.menuSetDefaultServer).DisposeWith(disposables);
             this.BindCommand(ViewModel, vm => vm.ShareServerCmd, v => v.menuShareServer).DisposeWith(disposables);
-            this.BindCommand(ViewModel, vm => vm.SetDefaultMultipleServerXrayRandomCmd, v => v.menuSetDefaultMultipleServerXrayRandom).DisposeWith(disposables);
-            this.BindCommand(ViewModel, vm => vm.SetDefaultMultipleServerXrayRoundRobinCmd, v => v.menuSetDefaultMultipleServerXrayRoundRobin).DisposeWith(disposables);
-            this.BindCommand(ViewModel, vm => vm.SetDefaultMultipleServerXrayLeastPingCmd, v => v.menuSetDefaultMultipleServerXrayLeastPing).DisposeWith(disposables);
-            this.BindCommand(ViewModel, vm => vm.SetDefaultMultipleServerXrayLeastLoadCmd, v => v.menuSetDefaultMultipleServerXrayLeastLoad).DisposeWith(disposables);
-            this.BindCommand(ViewModel, vm => vm.SetDefaultMultipleServerSingBoxLeastPingCmd, v => v.menuSetDefaultMultipleServerSingBoxLeastPing).DisposeWith(disposables);
+            this.BindCommand(ViewModel, vm => vm.GenGroupMultipleServerXrayRandomCmd, v => v.menuGenGroupMultipleServerXrayRandom).DisposeWith(disposables);
+            this.BindCommand(ViewModel, vm => vm.GenGroupMultipleServerXrayRoundRobinCmd, v => v.menuGenGroupMultipleServerXrayRoundRobin).DisposeWith(disposables);
+            this.BindCommand(ViewModel, vm => vm.GenGroupMultipleServerXrayLeastPingCmd, v => v.menuGenGroupMultipleServerXrayLeastPing).DisposeWith(disposables);
+            this.BindCommand(ViewModel, vm => vm.GenGroupMultipleServerXrayLeastLoadCmd, v => v.menuGenGroupMultipleServerXrayLeastLoad).DisposeWith(disposables);
+            this.BindCommand(ViewModel, vm => vm.GenGroupMultipleServerSingBoxLeastPingCmd, v => v.menuGenGroupMultipleServerSingBoxLeastPing).DisposeWith(disposables);
+            this.BindCommand(ViewModel, vm => vm.GenGroupMultipleServerSingBoxFallbackCmd, v => v.menuGenGroupMultipleServerSingBoxFallback).DisposeWith(disposables);
 
             //servers move
             this.OneWayBind(ViewModel, vm => vm.SubItems, v => v.cmbMoveToGroup.ItemsSource).DisposeWith(disposables);
@@ -150,6 +151,11 @@ public partial class ProfilesView
                     return false;
                 return (new AddServer2Window((ProfileItem)obj)).ShowDialog() ?? false;
 
+            case EViewAction.AddGroupServerWindow:
+                if (obj is null)
+                    return false;
+                return (new AddGroupServerWindow((ProfileItem)obj)).ShowDialog() ?? false;
+
             case EViewAction.ShareServer:
                 if (obj is null)
                     return false;

v2rayN/v2rayN/Views/QrcodeView.xaml

@@ -1,4 +1,4 @@
-<UserControl
+<UserControl
     x:Class="v2rayN.Views.QrcodeView"
     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
@@ -6,28 +6,33 @@
     xmlns:materialDesign="http://materialdesigninxaml.net/winfx/xaml/themes"
     xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
     xmlns:resx="clr-namespace:ServiceLib.Resx;assembly=ServiceLib"
-    d:DesignHeight="300"
-    d:DesignWidth="300"
+    xmlns:sys="clr-namespace:System;assembly=mscorlib"
+    d:DesignHeight="600"
+    d:DesignWidth="600"
     Style="{StaticResource ViewGlobal}"
     mc:Ignorable="d">
+    <UserControl.Resources>
+        <sys:Double x:Key="QrcodeWidth">500</sys:Double>
+    </UserControl.Resources>
+
     <Grid Margin="32">
         <Grid.RowDefinitions>
             <RowDefinition Height="Auto" />
             <RowDefinition Height="Auto" />
-            <RowDefinition Height="60" />
+            <RowDefinition Height="80" />
         </Grid.RowDefinitions>
 
         <Image
             x:Name="imgQrcode"
             Grid.Row="0"
-            Width="300"
-            Height="300"
+            Width="{StaticResource QrcodeWidth}"
+            Height="{StaticResource QrcodeWidth}"
             Stretch="UniformToFill" />
 
         <TextBox
             x:Name="txtContent"
             Grid.Row="1"
-            Width="300"
+            Width="{StaticResource QrcodeWidth}"
             Margin="0,8"
             VerticalAlignment="Center"
             IsReadOnly="True"
@@ -46,4 +51,4 @@
             IsDefault="True"
             Style="{StaticResource DefButton}" />
     </Grid>
-</UserControl>
+</UserControl>

v2rayN/v2rayN/Views/SubEditWindow.xaml.cs

@@ -57,7 +57,7 @@ public partial class SubEditWindow
     private async void BtnSelectPrevProfile_Click(object sender, RoutedEventArgs e)
     {
         var selectWindow = new ProfilesSelectWindow();
-        selectWindow.SetConfigTypeFilter(new[] { EConfigType.Custom }, exclude: true);
+        selectWindow.SetConfigTypeFilter(new[] { EConfigType.Custom, EConfigType.PolicyGroup, EConfigType.ProxyChain }, exclude: true);
         if (selectWindow.ShowDialog() == true)
         {
             var profile = await selectWindow.ProfileItem;
@@ -71,7 +71,7 @@ public partial class SubEditWindow
     private async void BtnSelectNextProfile_Click(object sender, RoutedEventArgs e)
     {
         var selectWindow = new ProfilesSelectWindow();
-        selectWindow.SetConfigTypeFilter(new[] { EConfigType.Custom }, exclude: true);
+        selectWindow.SetConfigTypeFilter(new[] { EConfigType.Custom, EConfigType.PolicyGroup, EConfigType.ProxyChain }, exclude: true);
         if (selectWindow.ShowDialog() == true)
         {
             var profile = await selectWindow.ProfileItem;