Add more options to xray fragment

v2rayN/ServiceLib/Handler/ConfigHandler.cs

@@ -156,6 +156,12 @@ namespace ServiceLib.Handler
             config.SystemProxyItem ??= new();
             config.WebDavItem ??= new();
             config.CheckUpdateItem ??= new();
+            config.Fragment4RayItem ??= new()
+            {
+                Packets = "tlshello",
+                Length = "100-200",
+                Interval = "10-20"
+            };
 
             if (Utils.IsNotEmpty(config.ConstItem.DefIEProxyExceptions))
             {

v2rayN/ServiceLib/Models/Config.cs

@@ -47,6 +47,7 @@
         public SystemProxyItem SystemProxyItem { get; set; }
         public WebDavItem WebDavItem { get; set; }
         public CheckUpdateItem CheckUpdateItem { get; set; }
+        public Fragment4RayItem? Fragment4RayItem { get; set; }
         public List<InItem> Inbound { get; set; }
         public List<KeyEventItem> GlobalHotkeys { get; set; }
         public List<CoreTypeItem> CoreTypeItem { get; set; }

v2rayN/ServiceLib/Models/ConfigItems.cs

@@ -246,4 +246,12 @@
         public bool CheckPreReleaseUpdate { get; set; }
         public List<string>? SelectedCoreTypes { get; set; }
     }
+
+    [Serializable]
+    public class Fragment4RayItem
+    {
+        public string? Packets { get; set; }
+        public string? Length { get; set; }
+        public string? Interval { get; set; }
+    }
 }

v2rayN/ServiceLib/Services/CoreConfig/CoreConfigV2rayService.cs

@@ -1167,9 +1167,9 @@ namespace ServiceLib.Services.CoreConfig
                     {
                         fragment = new()
                         {
-                            packets = "tlshello",
+                            packets = _config.Fragment4RayItem?.Packets,
-                            length = "100-200",
+                            length = _config.Fragment4RayItem?.Length,
-                            interval = "10-20"
+                            interval = _config.Fragment4RayItem?.Interval
                         }
                     }
                 };