Xray tun features (#10264)

* Xray tun features

* Try sync

v2rayN/ServiceLib/Handler/Builder/CoreConfigContextBuilder.cs

@@ -49,6 +49,7 @@ public class CoreConfigContextBuilder
             RoutingItem = await ConfigHandler.GetDefaultRouting(config),
             IsWindows = Utils.IsWindows(),
             IsMacOS = Utils.IsMacOS(),
+            IsLinux = Utils.IsLinux(),
             HasGlobalIPv6Address = Utils.HasGlobalIPv6Address(),
             ProtectCoreTypeList = config.TunModeItem.EnableTun ? [ECoreType.Xray, ECoreType.sing_box] : []
         };

v2rayN/ServiceLib/Models/CoreConfigs/CoreConfigContext.cs

@@ -24,6 +24,7 @@ public record CoreConfigContext
 
     public bool IsWindows { get; init; }
     public bool IsMacOS { get; init; }
+    public bool IsLinux { get; init; }
 
     // Defaults to true so that a context built without this flag keeps routing IPv6 into the
     // tunnel; only a positive detection of the host having no global IPv6 address turns it off.

v2rayN/ServiceLib/Models/CoreConfigs/V2rayConfig.cs

@@ -92,6 +92,10 @@ public class Inboundsettings4Ray
     public string? autoOutboundsInterface { get; set; }
 
     public List<string>? dns { get; set; }
+
+    public bool? autoSystemDnsToGateway { get; set; }
+
+    public List<string>? autoSystemWfpBlockLeak { get; set; }
 }
 
 public class Sniffing4Ray

v2rayN/ServiceLib/Services/CoreConfig/V2ray/V2rayInboundService.cs

@@ -90,6 +90,15 @@ public partial class CoreConfigV2rayService
                 // tunInbound.sniffing.routeOnly = inbound.sniffing.routeOnly;
                 tunInbound.sniffing.routeOnly = true;
 
+                if (context.IsWindows && _config.TunModeItem.StrictRoute == true)
+                {
+                    tunInbound.settings.autoSystemWfpBlockLeak = ["dns", "misconfigtun"];
+                }
+                if (context.IsLinux)
+                {
+                    tunInbound.settings.autoSystemDnsToGateway = true;
+                }
+
                 if (_config.TunModeItem.RouteExcludeAddress is { Count: > 0 })
                 {
                     var wholeInternet = IPNetwork2.Parse("0.0.0.0/0");