Merge 11924b545f into 7f07279a4c

Based on actual network flow instead of data packets

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

@@ -23,6 +23,7 @@ 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";

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;
     }

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();
@@ -225,6 +227,15 @@ 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

@@ -32,18 +32,21 @@ public class ProfileItem : ReactiveObject
     public string GetSummary()
     {
         var summary = $"[{(ConfigType).ToString()}] ";
-        var arrAddr = Address.Contains(':') ? Address.Split(':') : Address.Split('.');
-        var addr = arrAddr.Length switch
+        if (IsComplex())
         {
-            > 2 => $"{arrAddr.First()}***{arrAddr.Last()}",
-            > 1 => $"***{arrAddr.Last()}",
-            _ => Address
-        };
-        summary += ConfigType switch
+            summary += $"[{CoreType.ToString()}]{Remarks}";
+        }
+        else
         {
-            EConfigType.Custom => $"[{CoreType.ToString()}]{Remarks}",
-            _ => $"{Remarks}({addr}:{Port})"
-        };
+            var arrAddr = Address.Contains(':') ? Address.Split(':') : Address.Split('.');
+            var addr = arrAddr.Length switch
+            {
+                > 2 => $"{arrAddr.First()}***{arrAddr.Last()}",
+                > 1 => $"***{arrAddr.Last()}",
+                _ => Address
+            };
+            summary += $"{Remarks}({addr}:{Port})";
+        }
         return summary;
     }
 
@@ -61,6 +64,51 @@ public class ProfileItem : ReactiveObject
         return Network.TrimEx();
     }
 
+    public bool IsComplex()
+    {
+        return ConfigType is EConfigType.Custom or > EConfigType.Group;
+    }
+
+    public bool IsValid()
+    {
+        if (IsComplex())
+            return true;
+
+        if (Address.IsNullOrEmpty() || Port is <= 0 or >= 65536)
+            return false;
+
+        switch (ConfigType)
+        {
+            case EConfigType.VMess:
+                if (Id.IsNullOrEmpty() || !Utils.IsGuidByParse(Id))
+                    return false;
+                break;
+
+            case EConfigType.VLESS:
+                if (Id.IsNullOrEmpty() || (!Utils.IsGuidByParse(Id) && Id.Length > 30))
+                    return false;
+                if (!Global.Flows.Contains(Flow))
+                    return false;
+                break;
+
+            case EConfigType.Shadowsocks:
+                if (Id.IsNullOrEmpty())
+                    return false;
+                if (string.IsNullOrEmpty(Security) || !Global.SsSecuritiesInSingbox.Contains(Security))
+                    return false;
+                break;
+        }
+
+        if ((ConfigType is EConfigType.VLESS or EConfigType.Trojan)
+            && StreamSecurity == Global.StreamSecurityReality
+            && PublicKey.IsNullOrEmpty())
+        {
+            return false;
+        }
+
+        return true;
+    }
+
     #endregion function
 
     [PrimaryKey]

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

@@ -114,6 +114,33 @@ namespace ServiceLib.Resx {
             }
         }
         
+        /// <summary>
+        ///   查找类似 Core &apos;{0}&apos; does not support network type &apos;{1}&apos;. 的本地化字符串。
+        /// </summary>
+        public static string CoreNotSupportNetwork {
+            get {
+                return ResourceManager.GetString("CoreNotSupportNetwork", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   查找类似 Core &apos;{0}&apos; does not support protocol &apos;{1}&apos;. 的本地化字符串。
+        /// </summary>
+        public static string CoreNotSupportProtocol {
+            get {
+                return ResourceManager.GetString("CoreNotSupportProtocol", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   查找类似 Core &apos;{0}&apos; does not support protocol &apos;{1}&apos; when using transport &apos;{2}&apos;. 的本地化字符串。
+        /// </summary>
+        public static string CoreNotSupportProtocolTransport {
+            get {
+                return ResourceManager.GetString("CoreNotSupportProtocolTransport", resourceCulture);
+            }
+        }
+        
         /// <summary>
         ///   查找类似 Note that custom configuration relies entirely on your own configuration and does not work with all settings. If you want to use the system proxy, please modify the listening port manually. 的本地化字符串。
         /// </summary>
@@ -267,6 +294,24 @@ namespace ServiceLib.Resx {
             }
         }
         
+        /// <summary>
+        ///   查找类似 Group &apos;{0}&apos; is empty. Please add at least one node. 的本地化字符串。
+        /// </summary>
+        public static string GroupEmpty {
+            get {
+                return ResourceManager.GetString("GroupEmpty", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   查找类似 The group &quot;{0}&quot; cannot reference itself. 的本地化字符串。
+        /// </summary>
+        public static string GroupSelfReference {
+            get {
+                return ResourceManager.GetString("GroupSelfReference", resourceCulture);
+            }
+        }
+        
         /// <summary>
         ///   查找类似 This is not the correct configuration, please check 的本地化字符串。
         /// </summary>
@@ -294,6 +339,15 @@ namespace ServiceLib.Resx {
             }
         }
         
+        /// <summary>
+        ///   查找类似 The {0} property is invalid, please check. 的本地化字符串。
+        /// </summary>
+        public static string InvalidProperty {
+            get {
+                return ResourceManager.GetString("InvalidProperty", resourceCulture);
+            }
+        }
+        
         /// <summary>
         ///   查找类似 Invalid address (URL) 的本地化字符串。
         /// </summary>
@@ -672,6 +726,15 @@ 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 +762,24 @@ 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 +1032,78 @@ 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 +1473,15 @@ 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 +1635,15 @@ 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 +1653,6 @@ 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>
@@ -1941,6 +2058,15 @@ namespace ServiceLib.Resx {
             }
         }
         
+        /// <summary>
+        ///   查找类似 Node alias &apos;{0}&apos; does not exist. 的本地化字符串。
+        /// </summary>
+        public static string NodeTagNotExist {
+            get {
+                return ResourceManager.GetString("NodeTagNotExist", resourceCulture);
+            }
+        }
+        
         /// <summary>
         ///   查找类似 Non-VMess or SS protocol 的本地化字符串。
         /// </summary>
@@ -1995,6 +2121,15 @@ 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>
@@ -2040,6 +2175,24 @@ namespace ServiceLib.Resx {
             }
         }
         
+        /// <summary>
+        ///   查找类似 Policy group:  的本地化字符串。
+        /// </summary>
+        public static string PolicyGroupPrefix {
+            get {
+                return ResourceManager.GetString("PolicyGroupPrefix", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   查找类似 Proxy chained:  的本地化字符串。
+        /// </summary>
+        public static string ProxyChainedPrefix {
+            get {
+                return ResourceManager.GetString("ProxyChainedPrefix", resourceCulture);
+            }
+        }
+        
         /// <summary>
         ///   查找类似 Global hotkey {0} registration failed, reason: {1} 的本地化字符串。
         /// </summary>
@@ -2103,6 +2256,15 @@ namespace ServiceLib.Resx {
             }
         }
         
+        /// <summary>
+        ///   查找类似 Routing rule outbound:  的本地化字符串。
+        /// </summary>
+        public static string RoutingRuleOutboundPrefix {
+            get {
+                return ResourceManager.GetString("RoutingRuleOutboundPrefix", resourceCulture);
+            }
+        }
+        
         /// <summary>
         ///   查找类似 Run as Admin 的本地化字符串。
         /// </summary>
@@ -2373,6 +2535,24 @@ 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 +2706,15 @@ 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 +2832,24 @@ 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 +2904,15 @@ 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 +2985,15 @@ 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 +3057,15 @@ 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 +1515,82 @@
   <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>
+  <data name="CoreNotSupportNetwork" xml:space="preserve">
+    <value>Core '{0}' does not support network type '{1}'.</value>
+  </data>
+  <data name="CoreNotSupportProtocolTransport" xml:space="preserve">
+    <value>Core '{0}' does not support protocol '{1}' when using transport '{2}'.</value>
+  </data>
+  <data name="CoreNotSupportProtocol" xml:space="preserve">
+    <value>Core '{0}' does not support protocol '{1}'.</value>
+  </data>
+  <data name="ProxyChainedPrefix" xml:space="preserve">
+    <value>Proxy chained: </value>
+  </data>
+  <data name="RoutingRuleOutboundPrefix" xml:space="preserve">
+    <value>Routing rule outbound: </value>
+  </data>
+  <data name="PolicyGroupPrefix" xml:space="preserve">
+    <value>Policy group: </value>
+  </data>
+  <data name="NodeTagNotExist" xml:space="preserve">
+    <value>Node alias '{0}' does not exist.</value>
+  </data>
+  <data name="GroupEmpty" xml:space="preserve">
+    <value>Group '{0}' is empty. Please add at least one node.</value>
+  </data>
+  <data name="InvalidProperty" xml:space="preserve">
+    <value>The {0} property is invalid, please check.</value>
+  </data>
+  <data name="GroupSelfReference" xml:space="preserve">
+    <value>The group "{0}" cannot reference itself.</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 +1515,82 @@
   <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>
+  <data name="CoreNotSupportNetwork" xml:space="preserve">
+    <value>Core '{0}' does not support network type '{1}'.</value>
+  </data>
+  <data name="CoreNotSupportProtocolTransport" xml:space="preserve">
+    <value>Core '{0}' does not support protocol '{1}' when using transport '{2}'.</value>
+  </data>
+  <data name="CoreNotSupportProtocol" xml:space="preserve">
+    <value>Core '{0}' does not support protocol '{1}'.</value>
+  </data>
+  <data name="ProxyChainedPrefix" xml:space="preserve">
+    <value>Proxy chained: </value>
+  </data>
+  <data name="RoutingRuleOutboundPrefix" xml:space="preserve">
+    <value>Routing rule outbound: </value>
+  </data>
+  <data name="PolicyGroupPrefix" xml:space="preserve">
+    <value>Policy group: </value>
+  </data>
+  <data name="NodeTagNotExist" xml:space="preserve">
+    <value>Node alias '{0}' does not exist.</value>
+  </data>
+  <data name="GroupEmpty" xml:space="preserve">
+    <value>Group '{0}' is empty. Please add at least one node.</value>
+  </data>
+  <data name="InvalidProperty" xml:space="preserve">
+    <value>The {0} property is invalid, please check.</value>
+  </data>
+  <data name="GroupSelfReference" xml:space="preserve">
+    <value>The group "{0}" cannot reference itself.</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 +1515,82 @@
   <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>
+  <data name="CoreNotSupportNetwork" xml:space="preserve">
+    <value>Core '{0}' does not support network type '{1}'.</value>
+  </data>
+  <data name="CoreNotSupportProtocolTransport" xml:space="preserve">
+    <value>Core '{0}' does not support protocol '{1}' when using transport '{2}'.</value>
+  </data>
+  <data name="CoreNotSupportProtocol" xml:space="preserve">
+    <value>Core '{0}' does not support protocol '{1}'.</value>
+  </data>
+  <data name="ProxyChainedPrefix" xml:space="preserve">
+    <value>Proxy chained: </value>
+  </data>
+  <data name="RoutingRuleOutboundPrefix" xml:space="preserve">
+    <value>Routing rule outbound: </value>
+  </data>
+  <data name="PolicyGroupPrefix" xml:space="preserve">
+    <value>Policy group: </value>
+  </data>
+  <data name="NodeTagNotExist" xml:space="preserve">
+    <value>Node alias '{0}' does not exist.</value>
+  </data>
+  <data name="GroupEmpty" xml:space="preserve">
+    <value>Group '{0}' is empty. Please add at least one node.</value>
+  </data>
+  <data name="InvalidProperty" xml:space="preserve">
+    <value>The {0} property is invalid, please check.</value>
+  </data>
+  <data name="GroupSelfReference" xml:space="preserve">
+    <value>The group "{0}" cannot reference itself.</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 +1515,82 @@
   <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>
+  <data name="CoreNotSupportNetwork" xml:space="preserve">
+    <value>Core '{0}' does not support network type '{1}'.</value>
+  </data>
+  <data name="CoreNotSupportProtocolTransport" xml:space="preserve">
+    <value>Core '{0}' does not support protocol '{1}' when using transport '{2}'.</value>
+  </data>
+  <data name="CoreNotSupportProtocol" xml:space="preserve">
+    <value>Core '{0}' does not support protocol '{1}'.</value>
+  </data>
+  <data name="ProxyChainedPrefix" xml:space="preserve">
+    <value>Proxy chained: </value>
+  </data>
+  <data name="RoutingRuleOutboundPrefix" xml:space="preserve">
+    <value>Routing rule outbound: </value>
+  </data>
+  <data name="PolicyGroupPrefix" xml:space="preserve">
+    <value>Policy group: </value>
+  </data>
+  <data name="NodeTagNotExist" xml:space="preserve">
+    <value>Node alias '{0}' does not exist.</value>
+  </data>
+  <data name="GroupEmpty" xml:space="preserve">
+    <value>Group '{0}' is empty. Please add at least one node.</value>
+  </data>
+  <data name="InvalidProperty" xml:space="preserve">
+    <value>The {0} property is invalid, please check.</value>
+  </data>
+  <data name="GroupSelfReference" xml:space="preserve">
+    <value>The group "{0}" cannot reference itself.</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 +1512,82 @@
   <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>
+  <data name="CoreNotSupportNetwork" xml:space="preserve">
+    <value>核心 '{0}' 不支持网络类型 '{1}'。</value>
+  </data>
+  <data name="CoreNotSupportProtocolTransport" xml:space="preserve">
+    <value>核心 '{0}' 在使用传输方式 '{2}' 时不支持协议 '{1}'。</value>
+  </data>
+  <data name="CoreNotSupportProtocol" xml:space="preserve">
+    <value>核心 '{0}' 不支持协议 '{1}'。</value>
+  </data>
+  <data name="ProxyChainedPrefix" xml:space="preserve">
+    <value>代理链： </value>
+  </data>
+  <data name="RoutingRuleOutboundPrefix" xml:space="preserve">
+    <value>路由规则出站： </value>
+  </data>
+  <data name="PolicyGroupPrefix" xml:space="preserve">
+    <value>策略组： </value>
+  </data>
+  <data name="NodeTagNotExist" xml:space="preserve">
+    <value>节点别名 '{0}' 不存在。</value>
+  </data>
+  <data name="GroupEmpty" xml:space="preserve">
+    <value>组“{0}”为空。请至少添加一个节点。</value>
+  </data>
+  <data name="InvalidProperty" xml:space="preserve">
+    <value>{0}属性无效，请检查</value>
+  </data>
+  <data name="GroupSelfReference" xml:space="preserve">
+    <value>{0} 分组不能引用自身</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 +1512,82 @@
   <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>
+  <data name="CoreNotSupportNetwork" xml:space="preserve">
+    <value>Core '{0}' does not support network type '{1}'.</value>
+  </data>
+  <data name="CoreNotSupportProtocolTransport" xml:space="preserve">
+    <value>Core '{0}' does not support protocol '{1}' when using transport '{2}'.</value>
+  </data>
+  <data name="CoreNotSupportProtocol" xml:space="preserve">
+    <value>Core '{0}' does not support protocol '{1}'.</value>
+  </data>
+  <data name="ProxyChainedPrefix" xml:space="preserve">
+    <value>Proxy chained: </value>
+  </data>
+  <data name="RoutingRuleOutboundPrefix" xml:space="preserve">
+    <value>Routing rule outbound: </value>
+  </data>
+  <data name="PolicyGroupPrefix" xml:space="preserve">
+    <value>Policy group: </value>
+  </data>
+  <data name="NodeTagNotExist" xml:space="preserve">
+    <value>Node alias '{0}' does not exist.</value>
+  </data>
+  <data name="GroupEmpty" xml:space="preserve">
+    <value>Group '{0}' is empty. Please add at least one node.</value>
+  </data>
+  <data name="InvalidProperty" xml:space="preserve">
+    <value>The {0} property is invalid, please check.</value>
+  </data>
+  <data name="GroupSelfReference" xml:space="preserve">
+    <value>The group "{0}" cannot reference itself.</value>
+  </data>
 </root>

v2rayN/ServiceLib/Services/ActionPrecheckService.cs

@@ -0,0 +1,282 @@
+namespace ServiceLib.Services;
+
+/// <summary>
+/// Centralized pre-checks before sensitive actions (set active profile, generate config, etc.).
+/// </summary>
+public class ActionPrecheckService(Config config)
+{
+    private static readonly Lazy<ActionPrecheckService> _instance = new(() => new ActionPrecheckService(AppManager.Instance.Config));
+    public static ActionPrecheckService Instance => _instance.Value;
+
+    private readonly Config _config = config;
+
+    public async Task<List<string>> CheckBeforeSetActive(string? indexId)
+    {
+        if (indexId.IsNullOrEmpty())
+        {
+            return [ResUI.PleaseSelectServer];
+        }
+
+        var item = await AppManager.Instance.GetProfileItem(indexId);
+        if (item is null)
+        {
+            return [ResUI.PleaseSelectServer];
+        }
+
+        return await CheckBeforeGenerateConfig(item);
+    }
+
+    public async Task<List<string>> CheckBeforeGenerateConfig(ProfileItem? item)
+    {
+        if (item is null)
+        {
+            return [ResUI.PleaseSelectServer];
+        }
+
+        var errors = new List<string>();
+
+        errors.AddRange(await ValidateCurrentNodeAndCoreSupport(item));
+        errors.AddRange(await ValidateRelatedNodesExistAndValid(item));
+
+        return errors;
+    }
+
+    private async Task<List<string>> ValidateCurrentNodeAndCoreSupport(ProfileItem item)
+    {
+        if (item.ConfigType == EConfigType.Custom)
+        {
+            return [];
+        }
+        var coreType = AppManager.Instance.GetCoreType(item, item.ConfigType);
+        return await ValidateNodeAndCoreSupport(item, coreType);
+    }
+
+    private async Task<List<string>> ValidateNodeAndCoreSupport(ProfileItem item, ECoreType? coreType = null)
+    {
+        var errors = new List<string>();
+        
+        // sing-box does not support xhttp / kcp
+        // sing-box does not support transports like ws/http/httpupgrade/etc. when the node is not vmess/trojan/vless
+        coreType ??= AppManager.Instance.GetCoreType(item, item.ConfigType);
+
+        if (item.ConfigType is EConfigType.Custom)
+        {
+            errors.Add(string.Format(ResUI.CoreNotSupportProtocol, coreType.ToString(), item.ConfigType.ToString()));
+            return errors;
+        }
+
+        if (!item.IsComplex())
+        {
+            if (item.Address.IsNullOrEmpty())
+            {
+                errors.Add(string.Format(ResUI.InvalidProperty, "Address"));
+                return errors;
+            }
+
+            if (item.Port is <= 0 or >= 65536)
+            {
+                errors.Add(string.Format(ResUI.InvalidProperty, "Port"));
+                return errors;
+            }
+
+
+            switch (item.ConfigType)
+            {
+                case EConfigType.VMess:
+                    if (item.Id.IsNullOrEmpty() || !Utils.IsGuidByParse(item.Id))
+                        errors.Add(string.Format(ResUI.InvalidProperty, "Id"));
+                    break;
+
+                case EConfigType.VLESS:
+                    if (item.Id.IsNullOrEmpty() || (!Utils.IsGuidByParse(item.Id) && item.Id.Length > 30))
+                        errors.Add(string.Format(ResUI.InvalidProperty, "Id"));
+                    if (!Global.Flows.Contains(item.Flow))
+                        errors.Add(string.Format(ResUI.InvalidProperty, "Flow"));
+                    break;
+
+                case EConfigType.Shadowsocks:
+                    if (item.Id.IsNullOrEmpty())
+                        errors.Add(string.Format(ResUI.InvalidProperty, "Id"));
+                    if (string.IsNullOrEmpty(item.Security) || !Global.SsSecuritiesInSingbox.Contains(item.Security))
+                        errors.Add(string.Format(ResUI.InvalidProperty, "Security"));
+                    break;
+            }
+
+            if ((item.ConfigType is EConfigType.VLESS or EConfigType.Trojan)
+                && item.StreamSecurity == Global.StreamSecurityReality
+                && item.PublicKey.IsNullOrEmpty())
+            {
+                errors.Add(string.Format(ResUI.InvalidProperty, "PublicKey"));
+            }
+
+            if (errors.Count > 0)
+            {
+                return errors;
+            }
+        }
+
+        if (item.ConfigType is EConfigType.PolicyGroup or EConfigType.ProxyChain)
+        {
+            ProfileGroupItemManager.Instance.TryGet(item.IndexId, out var group);
+            if (group is null || group.ChildItems.IsNullOrEmpty())
+            {
+                errors.Add(string.Format(ResUI.GroupEmpty, item.Remarks));
+                return errors;
+            }
+            
+            foreach (var child in Utils.String2List(group.ChildItems))
+            {
+                var childErrors = new List<string>();
+                if (child.IsNullOrEmpty())
+                {
+                    continue;
+                }
+                
+                var childItem = await AppManager.Instance.GetProfileItem(child);
+                if (childItem is null)
+                {
+                    childErrors.Add(string.Format(ResUI.NodeTagNotExist, child));
+                    continue;
+                }
+
+                // self-reference check
+                if (childItem.IndexId == item.IndexId)
+                {
+                    childErrors.Add(string.Format(ResUI.GroupSelfReference, childItem.Remarks));
+                    continue;
+                }
+
+                if (childItem.ConfigType is EConfigType.Custom or EConfigType.ProxyChain)
+                {
+                    childErrors.Add(string.Format(ResUI.InvalidProperty, childItem.Remarks));
+                    continue;
+                }
+
+                childErrors.AddRange(await ValidateNodeAndCoreSupport(childItem, coreType));
+                errors.AddRange(childErrors);
+            }
+            return errors;
+        }
+
+        var net = item.GetNetwork() ?? item.Network;
+
+        if (coreType == ECoreType.sing_box)
+        {
+            if (net is nameof(ETransport.kcp) or nameof(ETransport.xhttp))
+            {
+                errors.Add(string.Format(ResUI.CoreNotSupportNetwork, nameof(ECoreType.sing_box), net));
+                return errors;
+            }
+
+            if (item.ConfigType is not (EConfigType.VMess or EConfigType.VLESS or EConfigType.Trojan))
+            {
+                if (net is nameof(ETransport.ws) or nameof(ETransport.http) or nameof(ETransport.h2) or nameof(ETransport.quic) or nameof(ETransport.httpupgrade))
+                {
+                    errors.Add(string.Format(ResUI.CoreNotSupportProtocolTransport, nameof(ECoreType.sing_box), item.ConfigType.ToString(), net));
+                    return errors;
+                }
+            }
+        }
+        else if (coreType is ECoreType.Xray)
+        {
+            // Xray core does not support these protocols
+            if (item.ConfigType is EConfigType.Hysteria2 or EConfigType.TUIC or EConfigType.Anytls)
+            {
+                errors.Add(string.Format(ResUI.CoreNotSupportProtocol, nameof(ECoreType.Xray), item.ConfigType.ToString()));
+                return errors;
+            }
+        }
+
+        return errors.Select(s => $"{item.Remarks}: {s}").ToList();
+    }
+
+    private async Task<List<string>> ValidateRelatedNodesExistAndValid(ProfileItem? item)
+    {
+        var errors = new List<string>();
+        errors.AddRange(await ValidateProxyChainedNodeExistAndValid(item));
+        errors.AddRange(await ValidateRoutingNodeExistAndValid(item));
+        return errors;
+    }
+
+    private async Task<List<string>> ValidateProxyChainedNodeExistAndValid(ProfileItem? item)
+    {
+        var errors = new List<string>();
+        if (item is null)
+        {
+            return errors;
+        }
+
+        // prev node and next node
+        var subItem = await AppManager.Instance.GetSubItem(item.Subid);
+        if (subItem is null)
+        {
+            return errors;
+        }
+
+        var prevNode = await AppManager.Instance.GetProfileItemViaRemarks(subItem.PrevProfile);
+        var nextNode = await AppManager.Instance.GetProfileItemViaRemarks(subItem.NextProfile);
+        var coreType = AppManager.Instance.GetCoreType(item, item.ConfigType);
+
+        await CollectProxyChainedNodeValidation(prevNode, subItem.PrevProfile, coreType, errors);
+        await CollectProxyChainedNodeValidation(nextNode, subItem.NextProfile, coreType, errors);
+
+        return errors;
+    }
+
+    private async Task CollectProxyChainedNodeValidation(ProfileItem? node, string tag, ECoreType coreType, List<string> errors)
+    {
+        if (node is not null)
+        {
+            var nodeErrors = await ValidateNodeAndCoreSupport(node, coreType);
+            errors.AddRange(nodeErrors.Select(s => ResUI.ProxyChainedPrefix + s));
+        }
+        else if (tag.IsNotEmpty())
+        {
+            errors.Add(ResUI.ProxyChainedPrefix + string.Format(ResUI.NodeTagNotExist, tag));
+        }
+    }
+
+    private async Task<List<string>> ValidateRoutingNodeExistAndValid(ProfileItem? item)
+    {
+        var errors = new List<string>();
+
+        if (item is null)
+        {
+            return errors;
+        }
+
+        var coreType = AppManager.Instance.GetCoreType(item, item.ConfigType);
+        var routing = await ConfigHandler.GetDefaultRouting(_config);
+        if (routing == null)
+        {
+            return errors;
+        }
+
+        var rules = JsonUtils.Deserialize<List<RulesItem>>(routing.RuleSet);
+        foreach (var ruleItem in rules ?? [])
+        {
+            if (!ruleItem.Enabled)
+            {
+                continue;
+            }
+
+            var outboundTag = ruleItem.OutboundTag;
+            if (outboundTag.IsNullOrEmpty() || Global.OutboundTags.Contains(outboundTag))
+            {
+                continue;
+            }
+
+            var tagItem = await AppManager.Instance.GetProfileItemViaRemarks(outboundTag);
+            if (tagItem is null)
+            {
+                errors.Add(ResUI.RoutingRuleOutboundPrefix + string.Format(ResUI.NodeTagNotExist, outboundTag));
+                continue;
+            }
+
+            var tagErrors = await ValidateNodeAndCoreSupport(tagItem, coreType);
+            errors.AddRange(tagErrors.Select(s => ResUI.RoutingRuleOutboundPrefix + s));
+        }
+
+        return errors;
+    }
+}

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

@@ -16,7 +16,7 @@ public partial class CoreConfigSingboxService(Config config)
         try
         {
             if (node == null
-                || node.Port <= 0)
+                || !node.IsValid())
             {
                 ret.Msg = ResUI.CheckServerSettings;
                 return ret;
@@ -28,6 +28,17 @@ public partial class CoreConfigSingboxService(Config config)
             }
 
             ret.Msg = ResUI.InitialConfiguration;
+            
+            if (node?.ConfigType is EConfigType.PolicyGroup or EConfigType.ProxyChain)
+            {
+                switch (node.ConfigType)
+                {
+                    case EConfigType.PolicyGroup:
+                        return await GenerateClientMultipleLoadConfig(node);
+                    case EConfigType.ProxyChain:
+                        return await GenerateClientChainConfig(node);
+                }
+            }
 
             var result = EmbedUtils.GetEmbedText(Global.SingboxSampleClient);
             if (result.IsNullOrEmpty())
@@ -142,12 +153,9 @@ public partial class CoreConfigSingboxService(Config config)
                     continue;
                 }
                 var item = await AppManager.Instance.GetProfileItem(it.IndexId);
-                if (it.ConfigType is EConfigType.VMess or EConfigType.VLESS)
+                if (item is null || item.IsComplex() || !item.IsValid())
                 {
-                    if (item is null || item.Id.IsNullOrEmpty() || !Utils.IsGuidByParse(item.Id))
-                    {
-                        continue;
-                    }
+                    continue;
                 }
 
                 //find unused port
@@ -187,27 +195,6 @@ public partial class CoreConfigSingboxService(Config config)
                 singboxConfig.inbounds.Add(inbound);
 
                 //outbound
-                if (item is null)
-                {
-                    continue;
-                }
-                if (item.ConfigType == EConfigType.Shadowsocks
-                    && !Global.SsSecuritiesInSingbox.Contains(item.Security))
-                {
-                    continue;
-                }
-                if (item.ConfigType == EConfigType.VLESS
-                 && !Global.Flows.Contains(item.Flow))
-                {
-                    continue;
-                }
-                if (it.ConfigType is EConfigType.VLESS or EConfigType.Trojan
-                    && item.StreamSecurity == Global.StreamSecurityReality
-                    && item.PublicKey.IsNullOrEmpty())
-                {
-                    continue;
-                }
-
                 var server = await GenServer(item);
                 if (server is null)
                 {
@@ -266,7 +253,8 @@ public partial class CoreConfigSingboxService(Config config)
         var ret = new RetResult();
         try
         {
-            if (node is not { Port: > 0 })
+            if (node == null
+                || !node.IsValid())
             {
                 ret.Msg = ResUI.CheckServerSettings;
                 return ret;
@@ -344,7 +332,64 @@ public partial class CoreConfigSingboxService(Config config)
         }
     }
 
-    public async Task<RetResult> GenerateClientMultipleLoadConfig(List<ProfileItem> selecteds)
+    public async Task<RetResult> GenerateClientMultipleLoadConfig(ProfileItem parentNode)
+    {
+        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 groupRet = await GenGroupOutbound(parentNode, singboxConfig);
+            if (groupRet != 0)
+            {
+                ret.Msg = ResUI.FailedGenDefaultConfiguration;
+                return ret;
+            }
+
+            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(ProfileItem parentNode)
     {
         var ret = new RetResult();
         try
@@ -378,48 +423,12 @@ public partial class CoreConfigSingboxService(Config config)
             await GenExperimental(singboxConfig);
             singboxConfig.outbounds.RemoveAt(0);
 
-            var proxyProfiles = new List<ProfileItem>();
-            foreach (var it in selecteds)
-            {
-                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)
+            var groupRet = await GenGroupOutbound(parentNode, singboxConfig);
+            if (groupRet != 0)
             {
                 ret.Msg = ResUI.FailedGenDefaultConfiguration;
                 return ret;
             }
-            await GenOutboundsList(proxyProfiles, singboxConfig);
 
             await GenDns(null, singboxConfig);
             await ConvertGeo2Ruleset(singboxConfig);

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;
             }
         }
@@ -196,6 +204,67 @@ public partial class CoreConfigSingboxService
         return await Task.FromResult<BaseServer4Sbox?>(null);
     }
 
+    private async Task<int> GenGroupOutbound(ProfileItem node, SingboxConfig singboxConfig, string baseTagName = Global.ProxyTag, bool ignoreOriginChain = false)
+    {
+        try
+        {
+            if (node.ConfigType is not (EConfigType.PolicyGroup or EConfigType.ProxyChain))
+            {
+                return -1;
+            }
+            ProfileGroupItemManager.Instance.TryGet(node.IndexId, out var profileGroupItem);
+            if (profileGroupItem is null || profileGroupItem.ChildItems.IsNullOrEmpty())
+            {
+                return -1;
+            }
+            // remove custom nodes
+            // remove group nodes for proxy chain
+            // avoid self-reference
+            var childProfiles = (await Task.WhenAll(
+                    Utils.String2List(profileGroupItem.ChildItems)
+                        .Where(p => !p.IsNullOrEmpty())
+                        .Select(AppManager.Instance.GetProfileItem)
+                ))
+                .Where(p =>
+                    p != null
+                    && p.IsValid()
+                    && p.ConfigType != EConfigType.Custom
+                    && (node.ConfigType == EConfigType.PolicyGroup || p.ConfigType < EConfigType.Group)
+                    && p.IndexId != node.IndexId
+                )
+                .ToList();
+
+            if (childProfiles.Count <= 0)
+            {
+                return -1;
+            }
+            switch (node.ConfigType)
+            {
+                case EConfigType.PolicyGroup:
+                    if (ignoreOriginChain)
+                    {
+                        await GenOutboundsList(childProfiles, singboxConfig, profileGroupItem.MultipleLoad, baseTagName);
+                    }
+                    else
+                    {
+                        await GenOutboundsListWithChain(childProfiles, singboxConfig, profileGroupItem.MultipleLoad, baseTagName);
+                    }
+
+                    break;
+                case EConfigType.ProxyChain:
+                    await GenChainOutboundsList(childProfiles, singboxConfig, baseTagName);
+                    break;
+                default:
+                    break;
+            }
+        }
+        catch (Exception ex)
+        {
+            Logging.SaveLog(_tag, ex);
+        }
+        return await Task.FromResult(0);
+    }
+
     private async Task<int> GenOutboundMux(ProfileItem node, Outbound4Sbox outbound)
     {
         try
@@ -410,7 +479,7 @@ 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 +507,38 @@ 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 +551,7 @@ 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 +568,7 @@ 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 +609,21 @@ 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 +680,114 @@ 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 +383,24 @@ public partial class CoreConfigSingboxService
             return tag;
         }
 
+        if (node.ConfigType is EConfigType.PolicyGroup or EConfigType.ProxyChain)
+        {
+            var childBaseTagName = $"{Global.ProxyTag}-{node.IndexId}";
+            var ret = await GenGroupOutbound(node, singboxConfig, childBaseTagName);
+            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

@@ -16,7 +16,7 @@ public partial class CoreConfigV2rayService(Config config)
         try
         {
             if (node == null
-                || node.Port <= 0)
+                || !node.IsValid())
             {
                 ret.Msg = ResUI.CheckServerSettings;
                 return ret;
@@ -30,6 +30,17 @@ public partial class CoreConfigV2rayService(Config config)
 
             ret.Msg = ResUI.InitialConfiguration;
 
+            if (node?.ConfigType is EConfigType.PolicyGroup or EConfigType.ProxyChain)
+            {
+                switch (node.ConfigType)
+                {
+                    case EConfigType.PolicyGroup:
+                        return await GenerateClientMultipleLoadConfig(node);
+                    case EConfigType.ProxyChain:
+                        return await GenerateClientChainConfig(node);
+                }
+            }
+
             var result = EmbedUtils.GetEmbedText(Global.V2raySampleClient);
             if (result.IsNullOrEmpty())
             {
@@ -71,7 +82,112 @@ public partial class CoreConfigV2rayService(Config config)
         }
     }
 
-    public async Task<RetResult> GenerateClientMultipleLoadConfig(List<ProfileItem> selecteds, EMultipleLoad multipleLoad)
+    public async Task<RetResult> GenerateClientMultipleLoadConfig(ProfileItem parentNode)
+    {
+        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 groupRet = await GenGroupOutbound(parentNode, v2rayConfig);
+            if (groupRet != 0)
+            {
+                ret.Msg = ResUI.FailedGenDefaultConfiguration;
+                return ret;
+            }
+
+            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(ProfileItem parentNode)
     {
         var ret = new RetResult();
 
@@ -107,82 +223,12 @@ public partial class CoreConfigV2rayService(Config config)
             await GenStatistic(v2rayConfig);
             v2rayConfig.outbounds.RemoveAt(0);
 
-            var proxyProfiles = new List<ProfileItem>();
-            foreach (var it in selecteds)
-            {
-                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)
+            var groupRet = await GenGroupOutbound(parentNode, v2rayConfig);
+            if (groupRet != 0)
             {
                 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"
-                });
-            }
 
             ret.Success = true;
 
@@ -255,12 +301,9 @@ public partial class CoreConfigV2rayService(Config config)
                     continue;
                 }
                 var item = await AppManager.Instance.GetProfileItem(it.IndexId);
-                if (it.ConfigType is EConfigType.VMess or EConfigType.VLESS)
+                if (item is null || item.IsComplex() || !item.IsValid())
                 {
-                    if (item is null || item.Id.IsNullOrEmpty() || !Utils.IsGuidByParse(item.Id))
-                    {
-                        continue;
-                    }
+                    continue;
                 }
 
                 //find unused port
@@ -289,28 +332,6 @@ public partial class CoreConfigV2rayService(Config config)
                 it.Port = port;
                 it.AllowTest = true;
 
-                //outbound
-                if (item is null)
-                {
-                    continue;
-                }
-                if (item.ConfigType == EConfigType.Shadowsocks
-                    && !Global.SsSecuritiesInXray.Contains(item.Security))
-                {
-                    continue;
-                }
-                if (item.ConfigType == EConfigType.VLESS
-                 && !Global.Flows.Contains(item.Flow))
-                {
-                    continue;
-                }
-                if (it.ConfigType is EConfigType.VLESS or EConfigType.Trojan
-                    && item.StreamSecurity == Global.StreamSecurityReality
-                    && item.PublicKey.IsNullOrEmpty())
-                {
-                    continue;
-                }
-
                 //inbound
                 Inbounds4Ray inbound = new()
                 {
@@ -321,6 +342,7 @@ public partial class CoreConfigV2rayService(Config config)
                 inbound.tag = inbound.protocol + inbound.port.ToString();
                 v2rayConfig.inbounds.Add(inbound);
 
+                //outbound
                 var outbound = JsonUtils.Deserialize<Outbounds4Ray>(txtOutbound);
                 await GenOutbound(item, outbound);
                 outbound.tag = Global.ProxyTag + inbound.port.ToString();
@@ -354,7 +376,8 @@ public partial class CoreConfigV2rayService(Config config)
         var ret = new RetResult();
         try
         {
-            if (node is not { Port: > 0 })
+            if (node == null
+                || !node.IsValid())
             {
                 ret.Msg = ResUI.CheckServerSettings;
                 return ret;

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

@@ -480,6 +480,69 @@ public partial class CoreConfigV2rayService
         return 0;
     }
 
+    private async Task<int> GenGroupOutbound(ProfileItem node, V2rayConfig v2rayConfig, string baseTagName = Global.ProxyTag, bool ignoreOriginChain = false)
+    {
+        try
+        {
+            if (node.ConfigType is not (EConfigType.PolicyGroup or EConfigType.ProxyChain))
+            {
+                return -1;
+            }
+            ProfileGroupItemManager.Instance.TryGet(node.IndexId, out var profileGroupItem);
+            if (profileGroupItem is null || profileGroupItem.ChildItems.IsNullOrEmpty())
+            {
+                return -1;
+            }
+            // remove custom nodes
+            // remove group nodes for proxy chain
+            var childProfiles = (await Task.WhenAll(
+                    Utils.String2List(profileGroupItem.ChildItems)
+                        .Where(p => !p.IsNullOrEmpty())
+                        .Select(AppManager.Instance.GetProfileItem)
+                ))
+                .Where(p =>
+                    p != null &&
+                    p.IsValid() &&
+                    p.ConfigType != EConfigType.Custom &&
+                    (node.ConfigType == EConfigType.PolicyGroup || p.ConfigType < EConfigType.Group)
+                )
+                .ToList();
+
+            if (childProfiles.Count <= 0)
+            {
+                return -1;
+            }
+            switch (node.ConfigType)
+            {
+                case EConfigType.PolicyGroup:
+                    if (ignoreOriginChain)
+                    {
+                        await GenOutboundsList(childProfiles, v2rayConfig, baseTagName);
+                    }
+                    else
+                    {
+                        await GenOutboundsListWithChain(childProfiles, v2rayConfig, baseTagName);
+                    }
+                    break;
+                case EConfigType.ProxyChain:
+                    await GenChainOutboundsList(childProfiles, v2rayConfig, baseTagName);
+                    break;
+                default:
+                    break;
+            }
+
+            //add balancers
+            await GenObservatory(v2rayConfig, profileGroupItem.MultipleLoad, baseTagName);
+            await GenBalancer(v2rayConfig, profileGroupItem.MultipleLoad, baseTagName);
+
+        }
+        catch (Exception ex)
+        {
+            Logging.SaveLog(_tag, ex);
+        }
+        return await Task.FromResult(0);
+    }
+
     private async Task<int> GenMoreOutbounds(ProfileItem node, V2rayConfig v2rayConfig)
     {
         //fragment proxy
@@ -552,7 +615,7 @@ 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 +640,34 @@ 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 +681,7 @@ 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 +697,7 @@ 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 +783,78 @@ 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 +139,17 @@ public partial class CoreConfigV2rayService
             return tag;
         }
 
+        if (node.ConfigType is EConfigType.PolicyGroup or EConfigType.ProxyChain)
+        {
+            var childBaseTagName = $"{Global.ProxyTag}-{node.IndexId}";
+            var ret = await GenGroupOutbound(node, v2rayConfig, 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/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);
@@ -252,6 +262,7 @@ 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);
 
@@ -340,6 +351,10 @@ 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

@@ -52,11 +52,13 @@ 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; }
@@ -138,25 +140,33 @@ 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
@@ -500,6 +510,10 @@ 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);
@@ -591,6 +605,16 @@ public class ProfilesViewModel : MyReactiveObject
             return;
         }
 
+        var msgs = await ActionPrecheckService.Instance.CheckBeforeSetActive(indexId);
+        foreach (var msg in msgs)
+        {
+            NoticeManager.Instance.SendMessage(msg);
+        }
+        if (msgs.Count > 0)
+        {
+            NoticeManager.Instance.Enqueue(msgs.First());
+        }
+
         if (await ConfigHandler.SetDefaultServerIndex(_config, indexId) == 0)
         {
             await RefreshServers();
@@ -615,7 +639,7 @@ 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)
@@ -623,7 +647,7 @@ 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);
@@ -754,6 +778,16 @@ public class ProfilesViewModel : MyReactiveObject
             NoticeManager.Instance.Enqueue(ResUI.PleaseSelectServer);
             return;
         }
+
+        var msgs = await ActionPrecheckService.Instance.CheckBeforeGenerateConfig(item);
+        foreach (var msg in msgs)
+        {
+            NoticeManager.Instance.SendMessage(msg);
+        }
+        if (msgs.Count > 0)
+        {
+            NoticeManager.Instance.Enqueue(msgs.First());
+        }
         if (blClipboard)
         {
             var result = await CoreConfigHandler.GenerateClientConfig(item, null);

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

@@ -83,6 +83,8 @@ 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);
@@ -207,6 +209,11 @@ 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

@@ -66,11 +66,12 @@ 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);
@@ -167,6 +168,11 @@ 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/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/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 +1,148 @@
+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);
+        });
+        WindowsUtils.SetDarkBorder(this, AppManager.Instance.Config.UiItem.CurrentTheme);
+    }
+
+    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

@@ -79,6 +79,8 @@ 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);
@@ -195,6 +197,11 @@ 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

@@ -60,11 +60,12 @@ 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);
@@ -148,6 +149,11 @@ 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/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;