up 7.24.1

Bumps [actions/setup-dotnet](https://github.com/actions/setup-dotnet) from 5.4.0 to 6.0.0.
- [Release notes](https://github.com/actions/setup-dotnet/releases)
- [Commits](https://github.com/actions/setup-dotnet/compare/v5.4.0...v6.0.0)

---
updated-dependencies:
- dependency-name: actions/setup-dotnet
  dependency-version: 6.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/scripts/UpdateCert.cs

@@ -1,3 +1,49 @@
+/*
+==============================================================================
+THIRD-PARTY CA CERTIFICATE DATA ATTRIBUTION
+==============================================================================
+
+This component includes CA certificate data obtained from third-party sources.
+
+1. Common CA Database (CCADB)
+------------------------------------------------------------------------------
+Website:
+https://www.ccadb.org/
+
+Data source:
+https://ccadb.my.salesforce-sites.com/mozilla/IncludedRootsPEMTxt?TrustBitsInclude=Websites
+
+License:
+Community Data License Agreement – Permissive, Version 2.0 (CDLA-2.0 Permissive)
+
+The names and trademarks of CCADB contributors may not be used to endorse or
+promote products derived from this data without prior written permission.
+
+License text:
+https://cdla.dev/permissive-2-0/
+
+
+2. Chromium Root Store
+------------------------------------------------------------------------------
+Source:
+Chromium Project
+
+Data source:
+https://chromium.googlesource.com/chromium/src/+/main/net/data/ssl/chrome_root_store/root_store.certs?format=TEXT
+
+License:
+BSD 3-Clause License
+
+Copyright:
+Copyright (c) The Chromium Authors
+
+The Chromium Root Store data is distributed under the BSD 3-Clause License.
+
+License text:
+https://opensource.org/licenses/BSD-3-Clause
+==============================================================================
+*/
+
 using System;
 using System.Net.Http;
 using System.Text;
@@ -27,68 +73,23 @@ Console.WriteLine("\nAll done!");
 
 async Task ProcessMozillaAsync(string outputDir)
 {
-    const string certdataUrl = "https://raw.githubusercontent.com/mozilla-firefox/firefox/refs/heads/release/security/nss/lib/ckfw/builtins/certdata.txt";
+    const string certdataUrl = "https://ccadb.my.salesforce-sites.com/mozilla/IncludedRootsPEMTxt?TrustBitsInclude=Websites";
     var outputFile = Path.Combine(outputDir, "mozilla_roots_pem");
 
     Console.WriteLine("Downloading Mozilla certdata.txt...");
     var content = await client.GetStringAsync(certdataUrl);
 
-    Console.WriteLine("Parsing MULTILINE_OCTAL to PEM...");
+    var pemMatches = Regex.Matches(content, @"(-----BEGIN CERTIFICATE-----[\s\S]*?-----END CERTIFICATE-----)");
-    var pems = ParseMozillaCertData(content);
+    var pems = new List<string>();
+    foreach (Match m in pemMatches)
+    {
+        pems.Add(m.Groups[1].Value.Trim());
+    }
 
     await File.WriteAllTextAsync(outputFile, string.Join("\n\n", pems));
     Console.WriteLine($"Mozilla roots saved to: {outputFile} ({pems.Count} certificates)");
 }
 
-List<string> ParseMozillaCertData(string text)
-{
-    var pems = new List<string>();
-
-    var matches = Regex.Matches(text, 
-        @"CKA_VALUE MULTILINE_OCTAL\s*([\s\S]*?)\s*END", 
-        RegexOptions.Multiline);
-
-    foreach (Match m in matches)
-    {
-        var octalBlock = m.Groups[1].Value.Trim();
-        var der = OctalToBytes(octalBlock);
-        if (der.Length > 0)
-        {
-            var pem = ConvertToPem(der);
-            pems.Add(pem);
-        }
-    }
-    return pems;
-}
-
-byte[] OctalToBytes(string octalBlock)
-{
-    var bytes = new List<byte>();
-    var matches = Regex.Matches(octalBlock, @"\\(\d{1,3})");
-    foreach (Match m in matches)
-    {
-        bytes.Add((byte)Convert.ToInt32(m.Groups[1].Value, 8));
-    }
-    return bytes.ToArray();
-}
-
-string ConvertToPem(byte[] der)
-{
-    var base64 = Convert.ToBase64String(der);
-    var sb = new StringBuilder();
-    sb.Append("-----BEGIN CERTIFICATE-----\n");
-    
-    for (int i = 0; i < base64.Length; i += 64)
-    {
-        var length = Math.Min(64, base64.Length - i);
-        sb.Append(base64.Substring(i, length));
-        sb.Append("\n");
-    }
-    
-    sb.Append("-----END CERTIFICATE-----\n");
-    return sb.ToString().TrimEnd();
-}
-
 async Task ProcessChromeAsync(string outputDir)
 {
     const string chromeCertsUrl = "https://chromium.googlesource.com/chromium/src/+/main/net/data/ssl/chrome_root_store/root_store.certs?format=TEXT";

.github/workflows/build-windows-x86.yml

@@ -52,7 +52,7 @@ jobs:
           dotnet --list-sdks 2>$null; $LASTEXITCODE=0
 
       - name: Setup .NET 10.0.1xx
-        uses: actions/setup-dotnet@v5.4.0
+        uses: actions/setup-dotnet@v6.0.0
         with:
           dotnet-version: 10.0.1xx
 

.github/workflows/build.yml

@@ -69,7 +69,7 @@ jobs:
         dotnet --list-sdks 2>$null; $LASTEXITCODE=0
 
     - name: Setup .NET
-      uses: actions/setup-dotnet@v5.4.0
+      uses: actions/setup-dotnet@v6.0.0
       with:
         dotnet-version: '10.0.1xx'
 

.github/workflows/test.yml

@@ -20,7 +20,7 @@ jobs:
         fetch-depth: '0'
 
     - name: Setup .NET
-      uses: actions/setup-dotnet@v5.4.0
+      uses: actions/setup-dotnet@v6.0.0
       with:
         dotnet-version: '8.0.x'
 

package-debian-loong.sh

@@ -597,7 +597,7 @@ package_binary() {
   write_desktop_file "$stage"
   write_maintainer_scripts "$debian_dir"
 
-  extra_depends="libc6 (>= 2.39), fontconfig (>= 2.15.0), desktop-file-utils (>= 0.26), xdg-utils (>= 1.2.0), coreutils (>= 9.5), bash (>= 5.2.26), libfreetype6 (>= 2.13)"
+  extra_depends="libc6 (>= 2.39), fontconfig (>= 2.15.0), desktop-file-utils (>= 0.26), xdg-utils (>= 1.1.3), coreutils (>= 9.4), bash (>= 5.2.21), libfreetype6 (>= 2.13)"
   
   mkdir -p "$workdir/debian"
   cat > "$workdir/debian/control" <<EOF

package-debian-riscv.sh

@@ -12,7 +12,7 @@ MIN_KERNEL="5.10"
 PKGROOT="v2rayN-publish"
 PROJECT_HINT="v2rayN.Desktop/v2rayN.Desktop.csproj"
 OUTPUT_DIR="${HOME}/debbuild"
-DOTNET_RISCV_VERSION="10.0.109"
+DOTNET_RISCV_VERSION="10.0.110"
 DOTNET_RISCV_BASE="https://github.com/xujiegb/dotnet-riscv/releases/download"
 DOTNET_RISCV_FILE="dotnet-sdk-${DOTNET_RISCV_VERSION}-linux-riscv64.tar.gz"
 DOTNET_SDK_URL="${DOTNET_RISCV_BASE}/${DOTNET_RISCV_VERSION}/${DOTNET_RISCV_FILE}"
@@ -595,7 +595,7 @@ package_binary() {
   write_desktop_file "$stage"
   write_maintainer_scripts "$debian_dir"
 
-  extra_depends="libc6 (>= 2.39), fontconfig (>= 2.15.0), desktop-file-utils (>= 0.26), xdg-utils (>= 1.2.0), coreutils (>= 9.5), bash (>= 5.2.26), libfreetype6 (>= 2.13)"
+  extra_depends="libc6 (>= 2.39), fontconfig (>= 2.15.0), desktop-file-utils (>= 0.26), xdg-utils (>= 1.1.3), coreutils (>= 9.4), bash (>= 5.2.21), libfreetype6 (>= 2.13)"
   
   mkdir -p "$workdir/debian"
   cat > "$workdir/debian/control" <<EOF

package-debian.sh

@@ -609,7 +609,7 @@ package_binary() {
   write_desktop_file "$stage"
   write_maintainer_scripts "$debian_dir"
 
-  extra_depends="libc6 (>= 2.39), fontconfig (>= 2.15.0), desktop-file-utils (>= 0.26), xdg-utils (>= 1.2.0), coreutils (>= 9.5), bash (>= 5.2.26), libfreetype6 (>= 2.13)"
+  extra_depends="libc6 (>= 2.39), fontconfig (>= 2.15.0), desktop-file-utils (>= 0.26), xdg-utils (>= 1.1.3), coreutils (>= 9.4), bash (>= 5.2.21), libfreetype6 (>= 2.13)"
 
   mkdir -p "$workdir/debian"
   cat > "$workdir/debian/control" <<EOF

package-rhel-loong.sh

@@ -513,9 +513,9 @@ Requires:       cairo, pango, openssl, mesa-libEGL, mesa-libGL
 Requires:       glibc >= 2.39
 Requires:       fontconfig >= 2.15.0
 Requires:       desktop-file-utils >= 0.26
-Requires:       xdg-utils >= 1.2.0
+Requires:       xdg-utils >= 1.1.3
-Requires:       coreutils >= 9.5
+Requires:       coreutils >= 9.4
-Requires:       bash >= 5.2.26
+Requires:       bash >= 5.2.21
 Requires:       freetype >= 2.13
 
 %description

package-rhel-riscv.sh

@@ -12,7 +12,7 @@ MIN_KERNEL="5.10"
 PKGROOT="v2rayN-publish"
 PROJECT_HINT="v2rayN.Desktop/v2rayN.Desktop.csproj"
 RPM_TOPDIR="${HOME}/rpmbuild"
-DOTNET_RISCV_VERSION="10.0.109"
+DOTNET_RISCV_VERSION="10.0.110"
 DOTNET_RISCV_BASE="https://github.com/xujiegb/dotnet-riscv/releases/download"
 DOTNET_RISCV_FILE="dotnet-sdk-${DOTNET_RISCV_VERSION}-linux-riscv64.tar.gz"
 DOTNET_SDK_URL="${DOTNET_RISCV_BASE}/${DOTNET_RISCV_VERSION}/${DOTNET_RISCV_FILE}"
@@ -512,9 +512,9 @@ Requires:       cairo, pango, openssl, mesa-libEGL, mesa-libGL
 Requires:       glibc >= 2.39
 Requires:       fontconfig >= 2.15.0
 Requires:       desktop-file-utils >= 0.26
-Requires:       xdg-utils >= 1.2.0
+Requires:       xdg-utils >= 1.1.3
-Requires:       coreutils >= 9.5
+Requires:       coreutils >= 9.4
-Requires:       bash >= 5.2.26
+Requires:       bash >= 5.2.21
 Requires:       freetype >= 2.13
 
 %description

package-rhel.sh

@@ -501,9 +501,9 @@ Requires:       cairo, pango, openssl, mesa-libEGL, mesa-libGL
 Requires:       glibc >= 2.39
 Requires:       fontconfig >= 2.15.0
 Requires:       desktop-file-utils >= 0.26
-Requires:       xdg-utils >= 1.2.0
+Requires:       xdg-utils >= 1.1.3
-Requires:       coreutils >= 9.5
+Requires:       coreutils >= 9.4
-Requires:       bash >= 5.2.26
+Requires:       bash >= 5.2.21
 Requires:       freetype >= 2.13
 
 %description

v2rayN/Directory.Build.props

@@ -1,7 +1,7 @@
 <Project>
 
     <PropertyGroup>
-        <Version>7.24.0</Version>
+        <Version>7.24.1</Version>
     </PropertyGroup>
 
     <PropertyGroup>

v2rayN/ServiceLib.Tests/CoreConfig/CoreConfigTestFactory.cs

@@ -59,7 +59,7 @@ internal static class CoreConfigTestFactory
                 },
             WebDavItem = new WebDavItem(),
             CheckUpdateItem = new CheckUpdateItem(),
-            Fragment4RayItem = new Fragment4RayItem { Packets = "tlshello", Length = "100-200", Interval = "10-20" },
+            Fragment4RayItem = new Fragment4RayItem { Packets = "tlshello", Lengths = ["100-200"], Delays = ["10-20"] },
             Inbound =
             [
                 new InItem
@@ -84,6 +84,7 @@ internal static class CoreConfigTestFactory
                 ParallelQuery = false,
                 Strategy4Freedom = Global.AsIs,
                 Strategy4Proxy = Global.AsIs,
+                Strategy4ProxyDial = Global.AsIs,
             },
             IndexId = string.Empty,
             SubIndexId = string.Empty,

v2rayN/ServiceLib.Tests/CoreConfig/V2ray/CoreConfigV2rayServiceTests.cs

@@ -567,7 +567,7 @@ public class CoreConfigV2rayServiceTests
 
         var directOutbound = cfg.outbounds.FirstOrDefault(o => o.tag == Global.DirectTag && o.protocol == "freedom");
         directOutbound.Should().NotBeNull();
-        directOutbound!.settings.domainStrategy.Should().Be("UseIPv4");
+        directOutbound!.streamSettings.sockopt!.domainStrategy.Should().Be("UseIPv4");
     }
 
     [Fact]

v2rayN/ServiceLib/Common/Utils.cs

@@ -485,12 +485,17 @@ public class Utils
 
     public static string? DomainStrategy4Sbox(string? strategy)
     {
+        if (strategy is null)
+        {
+            return null;
+        }
+
         return strategy switch
         {
-            not null when strategy.StartsWith("UseIPv4") => "prefer_ipv4",
+            _ when strategy.StartsWith("UseIPv6") => "prefer_ipv6",
-            not null when strategy.StartsWith("UseIPv6") => "prefer_ipv6",
+            _ when strategy.StartsWith("UseIP") => "prefer_ipv4",
-            not null when strategy.StartsWith("ForceIPv4") => "ipv4_only",
+            _ when strategy.StartsWith("ForceIPv6") => "ipv6_only",
-            not null when strategy.StartsWith("ForceIPv6") => "ipv6_only",
+            _ when strategy.StartsWith("ForceIP") => "ipv4_only",
             _ => null
         };
     }

v2rayN/ServiceLib/Handler/ConfigHandler.cs

@@ -119,6 +119,7 @@ public static class ConfigHandler
         config.SimpleDNSItem.BootstrapDNS ??= Global.DomainPureIPDNSAddress.FirstOrDefault();
         config.SimpleDNSItem.ServeStale ??= false;
         config.SimpleDNSItem.ParallelQuery ??= false;
+        config.SimpleDNSItem.EnableHappyEyeballs ??= false;
 
         config.SpeedTestItem ??= new();
         if (config.SpeedTestItem.SpeedTestTimeout < 10)
@@ -168,10 +169,24 @@ public static class ConfigHandler
         config.Fragment4RayItem ??= new()
         {
             Packets = "tlshello",
-            Length = "50-100",
-            Interval = "10-20",
-            MaxSplit = "0"
         };
+        config.Fragment4RayItem.MaxSplit ??= "0";
+
+        config.HappyEyeballs4RayItem ??= new()
+        {
+            TryDelayMs = 250,
+            PrioritizeIPv6 = false,
+            Interleave = 1,
+            MaxConcurrentTry = 4,
+        };
+        if ((config.Fragment4RayItem.Lengths ?? []).Count == 0)
+        {
+            config.Fragment4RayItem.Lengths = [config.Fragment4RayItem.Length ?? "50-100"];
+        }
+        if ((config.Fragment4RayItem.Delays ?? []).Count == 0)
+        {
+            config.Fragment4RayItem.Delays = [config.Fragment4RayItem.Interval ?? "10-20"];
+        }
         config.GlobalHotkeys ??= [];
 
         if (config.SystemProxyItem.SystemProxyExceptions.IsNullOrEmpty())

v2rayN/ServiceLib/Models/Configs/Config.cs

@@ -34,6 +34,7 @@ public class Config
     public List<KeyEventItem> GlobalHotkeys { get; set; }
     public List<CoreTypeItem> CoreTypeItem { get; set; }
     public SimpleDNSItem SimpleDNSItem { get; set; }
+    public HappyEyeballs4RayItem HappyEyeballs4RayItem { get; set; }
 
     #endregion other entities
 }

v2rayN/ServiceLib/Models/Configs/ConfigItems.cs

@@ -249,9 +249,14 @@ public class CheckUpdateItem
 public class Fragment4RayItem
 {
     public string? Packets { get; set; }
+    public List<string>? Lengths { get; set; }
+    public List<string>? Delays { get; set; }
+    public string? MaxSplit { get; set; }
+
+    // For migration from old version, remove those properties in the future
     public string? Length { get; set; }
     public string? Interval { get; set; }
-    public string? MaxSplit { get; set; }
+    // migration end
 }
 
 [Serializable]
@@ -275,8 +280,19 @@ public class SimpleDNSItem
     public string? BootstrapDNS { get; set; }
     public string? Strategy4Freedom { get; set; }
     public string? Strategy4Proxy { get; set; }
+    public string? Strategy4ProxyDial { get; set; }
     public bool? ServeStale { get; set; }
     public bool? ParallelQuery { get; set; }
     public string? Hosts { get; set; }
     public string? DirectExpectedIPs { get; set; }
+    public bool? EnableHappyEyeballs { get; set; }
+}
+
+[Serializable]
+public class HappyEyeballs4RayItem
+{
+    public int? TryDelayMs { get; set; }
+    public bool? PrioritizeIPv6 { get; set; }
+    public int? Interleave { get; set; }
+    public int? MaxConcurrentTry { get; set; }
 }

v2rayN/ServiceLib/Models/CoreConfigs/V2rayConfig.cs

@@ -136,8 +136,6 @@ public class Outboundsettings4Ray
 
     public Response4Ray? response { get; set; }
 
-    public string? domainStrategy { get; set; }
-
     public int? userLevel { get; set; }
 
     public string? secretKey { get; set; }
@@ -516,6 +514,8 @@ public class MaskSettings4Ray
 
     public string? length { get; set; }
     public string? delay { get; set; }
+    public List<string>? lengths { get; set; }
+    public List<string>? delays { get; set; }
     public int? maxSplit { get; set; }
 
     // noise
@@ -547,15 +547,19 @@ public class AccountsItem4Ray
 
 public class Sockopt4Ray
 {
+    public string? domainStrategy { get; set; }
+
     public string? dialerProxy { get; set; }
 
     [JsonPropertyName("interface")]
     public string? Interface { get; set; }
+    public HappyEyeballs4Ray? happyEyeballs { get; set; }
 }
 
-public class FragmentItem4Ray
+public class HappyEyeballs4Ray
 {
-    public string? packets { get; set; }
+    public int? tryDelayMs { get; set; }
-    public string? length { get; set; }
+    public bool? prioritizeIPv6 { get; set; }
-    public string? interval { get; set; }
+    public int? interleave { get; set; }
+    public int? maxConcurrentTry { get; set; }
 }

v2rayN/ServiceLib/Resx/ResUI.Designer.cs

@@ -3060,6 +3060,24 @@ namespace ServiceLib.Resx {
             }
         }
         
+        /// <summary>
+        ///   查找类似 Enable Happy Eyeballs 的本地化字符串。
+        /// </summary>
+        public static string TbEnableHappyEyeballs {
+            get {
+                return ResourceManager.GetString("TbEnableHappyEyeballs", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   查找类似 Requires the UseIP Strategy. When enabled, it attempts IPv4 and IPv6 connections simultaneously and automatically selects the faster available path. 的本地化字符串。
+        /// </summary>
+        public static string TbEnableHappyEyeballsTip {
+            get {
+                return ResourceManager.GetString("TbEnableHappyEyeballsTip", resourceCulture);
+            }
+        }
+        
         /// <summary>
         ///   查找类似 DNS via Bridge 的本地化字符串。
         /// </summary>
@@ -3528,6 +3546,24 @@ namespace ServiceLib.Resx {
             }
         }
         
+        /// <summary>
+        ///   查找类似 Proxy Dial Resolution Strategy 的本地化字符串。
+        /// </summary>
+        public static string TbProxyDialResolveStrategy {
+            get {
+                return ResourceManager.GetString("TbProxyDialResolveStrategy", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   查找类似 Not recommended; may cause routing loops. 的本地化字符串。
+        /// </summary>
+        public static string TbProxyDialResolveStrategyTip {
+            get {
+                return ResourceManager.GetString("TbProxyDialResolveStrategyTip", resourceCulture);
+            }
+        }
+        
         /// <summary>
         ///   查找类似 Public Key 的本地化字符串。
         /// </summary>

v2rayN/ServiceLib/Resx/ResUI.resx

@@ -1830,4 +1830,16 @@ The "Get Certificate" action may fail if a self-signed certificate is used or if
   <data name="TbRootCertificateProviderTip" xml:space="preserve">
     <value>Only applies to the v2rayN GUI's downloads and network requests. Does not affect the core's certificate validation.</value>
   </data>
+  <data name="TbProxyDialResolveStrategy" xml:space="preserve">
+    <value>Proxy Dial Resolution Strategy</value>
+  </data>
+  <data name="TbProxyDialResolveStrategyTip" xml:space="preserve">
+    <value>Not recommended; may cause routing loops.</value>
+  </data>
+  <data name="TbEnableHappyEyeballs" xml:space="preserve">
+    <value>Enable Happy Eyeballs</value>
+  </data>
+  <data name="TbEnableHappyEyeballsTip" xml:space="preserve">
+    <value>Requires the UseIP Strategy. When enabled, it attempts IPv4 and IPv6 connections simultaneously and automatically selects the faster available path.</value>
+  </data>
 </root>

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

@@ -1827,4 +1827,16 @@
   <data name="TbRootCertificateProviderTip" xml:space="preserve">
     <value>仅用于 v2rayN 界面程序的下载及网络请求，不影响核心的证书验证。</value>
   </data>
+  <data name="TbProxyDialResolveStrategy" xml:space="preserve">
+    <value>连接代理解析策略</value>
+  </data>
+  <data name="TbProxyDialResolveStrategyTip" xml:space="preserve">
+    <value>不建议开启，特殊情况可能回环。</value>
+  </data>
+  <data name="TbEnableHappyEyeballs" xml:space="preserve">
+    <value>启用 Happy Eyeballs</value>
+  </data>
+  <data name="TbEnableHappyEyeballsTip" xml:space="preserve">
+    <value>需配合 UseIP 策略使用。启用后将同时尝试 IPv4 和 IPv6 连接，并自动选择更快可用的路径。</value>
+  </data>
 </root>

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

@@ -171,7 +171,7 @@ public partial class CoreConfigSingboxService
             _coreConfig.dns.rules.Add(new()
             {
                 server = Global.SingboxDirectDNSTag,
-                strategy = Utils.DomainStrategy4Sbox(simpleDnsItem.Strategy4Freedom),
+                strategy = Utils.DomainStrategy4Sbox(simpleDnsItem.Strategy4ProxyDial),
                 domain = context.ProtectDomainList.ToList(),
             });
         }

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

@@ -417,11 +417,15 @@ public partial class CoreConfigSingboxService
             var tls = new Tls4Sbox()
             {
                 enabled = true,
-                record_fragment = _config.CoreBasicItem.EnableFragment ? true : null,
                 server_name = serverName,
                 insecure = _node.GetAllowInsecure(),
                 alpn = _node.GetAlpn(),
             };
+            if (_config.CoreBasicItem.EnableFragment == true)
+            {
+                tls.fragment = true;
+                tls.record_fragment = true;
+            }
             if (_node.Fingerprint.IsNotEmpty())
             {
                 tls.utls = new Utls4Sbox()

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

@@ -10,18 +10,27 @@ public partial class CoreConfigSingboxService
             var simpleDnsItem = context.SimpleDnsItem;
 
             var defaultDomainResolverTag = Global.SingboxDirectDNSTag;
-            var directDnsStrategy = Utils.DomainStrategy4Sbox(simpleDnsItem.Strategy4Freedom);
+            var dialDnsStrategy = Utils.DomainStrategy4Sbox(simpleDnsItem.Strategy4ProxyDial);
 
             var rawDNSItem = context.RawDnsItem;
             if (rawDNSItem is { Enabled: true })
             {
                 defaultDomainResolverTag = Global.SingboxLocalDNSTag;
-                directDnsStrategy = rawDNSItem.DomainStrategy4Freedom.IsNullOrEmpty() ? null : rawDNSItem.DomainStrategy4Freedom;
+                dialDnsStrategy = rawDNSItem.DomainStrategy4Freedom.IsNullOrEmpty() ? null : rawDNSItem.DomainStrategy4Freedom;
+            }
+            else if (!simpleDnsItem.Strategy4Freedom.IsNullOrEmpty())
+            {
+                var directOutbound = _coreConfig.outbounds.FirstOrDefault(o => o.tag == Global.DirectTag);
+                directOutbound?.domain_resolver = new()
+                {
+                    server = defaultDomainResolverTag,
+                    strategy = Utils.DomainStrategy4Sbox(simpleDnsItem.Strategy4Freedom),
+                };
             }
             _coreConfig.route.default_domain_resolver = new()
             {
                 server = defaultDomainResolverTag,
-                strategy = directDnsStrategy
+                strategy = dialDnsStrategy
             };
 
             if (context.IsTunEnabled)

v2rayN/ServiceLib/Services/CoreConfig/V2ray/V2rayDnsService.cs

@@ -43,11 +43,7 @@ public partial class CoreConfigV2rayService
                 var outbound = _coreConfig.outbounds.FirstOrDefault(t => t is { protocol: "freedom", tag: Global.DirectTag });
                 if (outbound != null)
                 {
-                    outbound.settings = new()
+                    FillSockoptDomainStrategy(outbound, strategy4Freedom);
-                    {
-                        domainStrategy = strategy4Freedom,
-                        userLevel = 0
-                    };
                 }
             }
 
@@ -64,6 +60,22 @@ public partial class CoreConfigV2rayService
                     .ForEach(outbound => outbound.targetStrategy = strategy4Proxy);
             }
 
+            var strategy4DialProxy = simpleDnsItem?.Strategy4ProxyDial ?? Global.AsIs;
+            //Outbound DialProxy domainStrategy
+            if (strategy4DialProxy.IsNotEmpty() && strategy4DialProxy != Global.AsIs)
+            {
+                var xraySupportConfigTypeNames = Global.XraySupportConfigType
+                        .Select(x => x == EConfigType.Hysteria2 ? "hysteria" : Global.ProtocolTypes[x])
+                        .ToHashSet();
+                _coreConfig.outbounds
+                    .Where(t => xraySupportConfigTypeNames.Contains(t.protocol))
+                    .ToList()
+                    .ForEach(outbound =>
+                    {
+                        FillSockoptDomainStrategy(outbound, strategy4DialProxy);
+                    });
+            }
+
             FillDnsServers(dnsItem);
             FillDnsHosts(dnsItem);
 
@@ -384,11 +396,9 @@ public partial class CoreConfigV2rayService
                 var outbound = _coreConfig.outbounds.FirstOrDefault(t => t is { protocol: "freedom", tag: Global.DirectTag });
                 if (outbound != null)
                 {
-                    outbound.settings = new()
+                    outbound.streamSettings ??= new();
-                    {
+                    outbound.streamSettings.sockopt ??= new();
-                        domainStrategy = domainStrategy4Freedom,
+                    outbound.streamSettings.sockopt.domainStrategy = domainStrategy4Freedom;
-                        userLevel = 0,
-                    };
                 }
             }
 
@@ -471,4 +481,28 @@ public partial class CoreConfigV2rayService
         };
         servers.AsArray().Add(JsonUtils.SerializeToNode(dnsServer));
     }
+
+    private void FillSockoptDomainStrategy(Outbounds4Ray outbound, string? domainStrategy, bool skipHappyEyeballs = false)
+    {
+        if (domainStrategy.IsNullOrEmpty())
+        {
+            return;
+        }
+        outbound.streamSettings ??= new();
+        outbound.streamSettings.sockopt ??= new();
+        var sockopt = outbound.streamSettings.sockopt;
+        sockopt.domainStrategy = domainStrategy;
+
+        if (skipHappyEyeballs || _config.SimpleDNSItem.EnableHappyEyeballs != true)
+        {
+            return;
+        }
+        var happyEyeballsItem = _config.HappyEyeballs4RayItem;
+        sockopt.happyEyeballs ??= new();
+        var happyEyeballs = sockopt.happyEyeballs;
+        happyEyeballs.tryDelayMs = happyEyeballsItem.TryDelayMs;
+        happyEyeballs.prioritizeIPv6 = happyEyeballsItem.PrioritizeIPv6;
+        happyEyeballs.interleave = happyEyeballsItem.Interleave;
+        happyEyeballs.maxConcurrentTry = happyEyeballsItem.MaxConcurrentTry;
+    }
 }

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

@@ -865,21 +865,10 @@ public partial class CoreConfigV2rayService
                                              && (n.streamSettings?.sockopt?.dialerProxy?.IsNullOrEmpty() ?? true))
                 .ToList();
 
-        var (fragmentMask, noiseMask) = BuildFragmentsMasks();
+        var fragmentMask = BuildFragmentsMasks();
 
         foreach (var outbound in actOutboundWithTlsList)
         {
-            //var packets = configPackets;
-            //if (outbound.streamSettings.security == Global.StreamSecurityReality
-            //    && packets == "tlshello")
-            //{
-            //    packets = "1-3";
-            //}
-            //else if (outbound.streamSettings.security == Global.StreamSecurity
-            //         && packets != "tlshello")
-            //{
-            //    packets = "tlshello";
-            //}
             var finalMaskJsonObj = JsonUtils.ParseJson(JsonUtils.Serialize(outbound.streamSettings?.finalmask)) as JsonObject ?? new JsonObject();
             // tcp fragment
             var tcpFinalmaskList = finalMaskJsonObj["tcp"] as JsonArray ?? [];
@@ -888,13 +877,6 @@ public partial class CoreConfigV2rayService
                 tcpFinalmaskList.Add(JsonUtils.SerializeToNode(fragmentMask));
                 finalMaskJsonObj["tcp"] = tcpFinalmaskList;
             }
-            // udp noise
-            var udpFinalmaskList = finalMaskJsonObj["udp"] as JsonArray ?? [];
-            if (udpFinalmaskList.Count == 0)
-            {
-                udpFinalmaskList.Add(JsonUtils.SerializeToNode(noiseMask));
-                finalMaskJsonObj["udp"] = udpFinalmaskList;
-            }
             // write back
             outbound.streamSettings.finalmask = finalMaskJsonObj;
         }
@@ -902,7 +884,7 @@ public partial class CoreConfigV2rayService
 
     private void ApplyFinalFragment()
     {
-        var (fragmentMask, noiseMask) = BuildFragmentsMasks();
+        var fragmentMask = BuildFragmentsMasks();
         var actOutboundList = _coreConfig.outbounds.Where(n => n.tag.StartsWith(Global.ProxyTag)).ToList();
 
         var fragmentFreedom = new Outbounds4Ray()
@@ -914,9 +896,8 @@ public partial class CoreConfigV2rayService
                 finalmask = new Finalmask4Ray
                 {
                     tcp = [fragmentMask],
-                    udp = [noiseMask],
+                },
-                }
+            },
-            }
         };
 
         foreach (var outbound in actOutboundList)
@@ -934,13 +915,22 @@ public partial class CoreConfigV2rayService
         }
     }
 
-    private (Mask4Ray tcpFragment, Mask4Ray udpNoise) BuildFragmentsMasks()
+    private Mask4Ray BuildFragmentsMasks()
     {
         var configPackets = _config.Fragment4RayItem?.Packets.NullIfEmpty() ?? "tlshello";
-        var configLength = _config.Fragment4RayItem?.Length.NullIfEmpty() ?? "50-100";
+        var configLengths = _config.Fragment4RayItem?.Lengths ?? [];
-        var configDelay = _config.Fragment4RayItem?.Interval.NullIfEmpty() ?? "10-20";
+        var configDelays = _config.Fragment4RayItem?.Delays ?? [];
         var configMaxSplit = _config.Fragment4RayItem?.MaxSplit.NullIfEmpty() ?? "0";
 
+        if (configLengths.Count == 0)
+        {
+            configLengths = ["50-100"];
+        }
+        if (configDelays.Count == 0)
+        {
+            configDelays = ["10-20"];
+        }
+
         var maxSplit = 0;
         var parts = configMaxSplit.Split('-');
         if (parts.Length > 0 && int.TryParse(parts[0], out var ms))
@@ -954,21 +944,15 @@ public partial class CoreConfigV2rayService
             settings = new MaskSettings4Ray
             {
                 packets = configPackets,
-                length = configLength,
+                lengths = configLengths,
-                delay = configDelay,
+                delays = configDelays,
                 maxSplit = maxSplit,
-            }
+                // For legacy xray compatibility, remove this in the future
-        };
+                length = configLengths.FirstOrDefault(),
-        var noiseMask = new Mask4Ray
+                delay = configDelays.FirstOrDefault(),
-        {
+            },
-            type = "noise",
-            settings = new MaskSettings4Ray
-            {
-                length = "10-20",
-                delay = "10-16",
-            }
         };
 
-        return (fragmentMask, noiseMask);
+        return fragmentMask;
     }
 }

v2rayN/ServiceLib/ViewModels/DNSSettingViewModel.cs

@@ -4,19 +4,21 @@ public class DNSSettingViewModel : MyReactiveObject, ICloseable
 {
     public event EventHandler? RequestClose;
 
-    [Reactive] public bool? UseSystemHosts { get; set; }
+    [Reactive] public bool UseSystemHosts { get; set; }
-    [Reactive] public bool? AddCommonHosts { get; set; }
+    [Reactive] public bool AddCommonHosts { get; set; }
-    [Reactive] public bool? FakeIP { get; set; }
+    [Reactive] public bool FakeIP { get; set; }
-    [Reactive] public bool? BlockBindingQuery { get; set; }
+    [Reactive] public bool BlockBindingQuery { get; set; }
-    [Reactive] public string? DirectDNS { get; set; }
+    [Reactive] public string DirectDNS { get; set; }
-    [Reactive] public string? RemoteDNS { get; set; }
+    [Reactive] public string RemoteDNS { get; set; }
-    [Reactive] public string? BootstrapDNS { get; set; }
+    [Reactive] public string BootstrapDNS { get; set; }
-    [Reactive] public string? Strategy4Freedom { get; set; }
+    [Reactive] public string Strategy4Freedom { get; set; }
-    [Reactive] public string? Strategy4Proxy { get; set; }
+    [Reactive] public string Strategy4Proxy { get; set; }
-    [Reactive] public string? Hosts { get; set; }
+    [Reactive] public string Strategy4ProxyDial { get; set; }
-    [Reactive] public string? DirectExpectedIPs { get; set; }
+    [Reactive] public string Hosts { get; set; }
-    [Reactive] public bool? ParallelQuery { get; set; }
+    [Reactive] public string DirectExpectedIPs { get; set; }
-    [Reactive] public bool? ServeStale { get; set; }
+    [Reactive] public bool ParallelQuery { get; set; }
+    [Reactive] public bool ServeStale { get; set; }
+    [Reactive] public bool EnableHappyEyeballs { get; set; }
 
     [Reactive] public bool UseSystemHostsCompatible { get; set; }
     [Reactive] public string DomainStrategy4FreedomCompatible { get; set; } = string.Empty;
@@ -67,20 +69,21 @@ public class DNSSettingViewModel : MyReactiveObject, ICloseable
     {
         _config = AppManager.Instance.Config;
         var item = _config.SimpleDNSItem;
-        UseSystemHosts = item.UseSystemHosts;
+        UseSystemHosts = item.UseSystemHosts ?? false;
-        AddCommonHosts = item.AddCommonHosts;
+        AddCommonHosts = item.AddCommonHosts ?? false;
-        FakeIP = item.FakeIP;
+        FakeIP = item.FakeIP ?? false;
-        BlockBindingQuery = item.BlockBindingQuery;
+        BlockBindingQuery = item.BlockBindingQuery ?? false;
-        DirectDNS = item.DirectDNS;
+        DirectDNS = item.DirectDNS ?? string.Empty;
-        RemoteDNS = item.RemoteDNS;
+        RemoteDNS = item.RemoteDNS ?? string.Empty;
-        BootstrapDNS = item.BootstrapDNS;
+        BootstrapDNS = item.BootstrapDNS ?? string.Empty;
-        Strategy4Freedom = item.Strategy4Freedom;
+        Strategy4Freedom = item.Strategy4Freedom ?? string.Empty;
-        Strategy4Proxy = item.Strategy4Proxy;
+        Strategy4Proxy = item.Strategy4Proxy ?? string.Empty;
-        Hosts = item.Hosts;
+        Strategy4ProxyDial = item.Strategy4ProxyDial ?? string.Empty;
-        DirectExpectedIPs = item.DirectExpectedIPs;
+        Hosts = item.Hosts ?? string.Empty;
-        ParallelQuery = item.ParallelQuery;
+        DirectExpectedIPs = item.DirectExpectedIPs ?? string.Empty;
-        ServeStale = item.ServeStale;
+        ParallelQuery = item.ParallelQuery ?? false;
-
+        ServeStale = item.ServeStale ?? false;
+        EnableHappyEyeballs = item.EnableHappyEyeballs ?? false;
         var item1 = await AppManager.Instance.GetDNSItem(ECoreType.Xray);
         RayCustomDNSEnableCompatible = item1.Enabled;
         UseSystemHostsCompatible = item1.UseSystemHosts;
@@ -108,11 +111,12 @@ public class DNSSettingViewModel : MyReactiveObject, ICloseable
         _config.SimpleDNSItem.BootstrapDNS = BootstrapDNS;
         _config.SimpleDNSItem.Strategy4Freedom = Strategy4Freedom;
         _config.SimpleDNSItem.Strategy4Proxy = Strategy4Proxy;
+        _config.SimpleDNSItem.Strategy4ProxyDial = Strategy4ProxyDial;
         _config.SimpleDNSItem.Hosts = Hosts;
         _config.SimpleDNSItem.DirectExpectedIPs = DirectExpectedIPs;
         _config.SimpleDNSItem.ParallelQuery = ParallelQuery;
         _config.SimpleDNSItem.ServeStale = ServeStale;
-
+        _config.SimpleDNSItem.EnableHappyEyeballs = EnableHappyEyeballs;
         if (NormalDNSCompatible.IsNotEmpty())
         {
             var obj = JsonUtils.ParseJson(NormalDNSCompatible);

v2rayN/ServiceLib/ViewModels/OptionSettingViewModel.cs

@@ -29,24 +29,12 @@ public class OptionSettingViewModel : MyReactiveObject, ICloseable
     [Reactive] public bool EnableFragment { get; set; }
     [Reactive] public bool EnableFinalFragment { get; set; }
     [Reactive] public string FragmentPackets { get; set; }
-    [Reactive] public string FragmentLength { get; set; }
+    [Reactive] public string FragmentLengths { get; set; }
-    [Reactive] public string FragmentInterval { get; set; }
+    [Reactive] public string FragmentDelays { get; set; }
     [Reactive] public string FragmentMaxSplit { get; set; }
 
     #endregion Core
 
-    #region Core KCP
-
-    //[Reactive] public int Kcpmtu { get; set; }
-    //[Reactive] public int Kcptti { get; set; }
-    //[Reactive] public int KcpuplinkCapacity { get; set; }
-    //[Reactive] public int KcpdownlinkCapacity { get; set; }
-    //[Reactive] public int KcpreadBufferSize { get; set; }
-    //[Reactive] public int KcpwriteBufferSize { get; set; }
-    //[Reactive] public bool Kcpcongestion { get; set; }
-
-    #endregion Core KCP
-
     #region UI
 
     [Reactive] public bool AutoRun { get; set; }
@@ -150,6 +138,7 @@ public class OptionSettingViewModel : MyReactiveObject, ICloseable
         SecondLocalPortEnabled = inbound.SecondLocalPortEnabled;
         UdpEnabled = inbound.UdpEnabled;
         SniffingEnabled = inbound.SniffingEnabled;
+        DestOverride = inbound.DestOverride ?? [];
         RouteOnly = inbound.RouteOnly;
         AllowLANConn = inbound.AllowLANConn;
         NewPort4LAN = inbound.NewPort4LAN;
@@ -168,24 +157,12 @@ public class OptionSettingViewModel : MyReactiveObject, ICloseable
         EnableFragment = _config.CoreBasicItem.EnableFragment;
         EnableFinalFragment = _config.CoreBasicItem.EnableFinalFragment;
         FragmentPackets = _config.Fragment4RayItem?.Packets;
-        FragmentLength = _config.Fragment4RayItem?.Length;
+        FragmentLengths = Utils.List2String(_config.Fragment4RayItem?.Lengths);
-        FragmentInterval = _config.Fragment4RayItem?.Interval;
+        FragmentDelays = Utils.List2String(_config.Fragment4RayItem?.Delays);
         FragmentMaxSplit = _config.Fragment4RayItem?.MaxSplit;
 
         #endregion Core
 
-        #region Core KCP
-
-        //Kcpmtu = _config.kcpItem.mtu;
-        //Kcptti = _config.kcpItem.tti;
-        //KcpuplinkCapacity = _config.kcpItem.uplinkCapacity;
-        //KcpdownlinkCapacity = _config.kcpItem.downlinkCapacity;
-        //KcpreadBufferSize = _config.kcpItem.readBufferSize;
-        //KcpwriteBufferSize = _config.kcpItem.writeBufferSize;
-        //Kcpcongestion = _config.kcpItem.congestion;
-
-        #endregion Core KCP
-
         #region UI
 
         AutoRun = _config.GuiItem.AutoRun;
@@ -309,34 +286,33 @@ public class OptionSettingViewModel : MyReactiveObject, ICloseable
             NoticeManager.Instance.Enqueue(ResUI.FillLocalListeningPort);
             return;
         }
+        var fragmentLengths = Utils.String2List(FragmentLengths) ?? [];
+        var fragmentDelays = Utils.String2List(FragmentDelays) ?? [];
+        if (fragmentLengths.Any(item => !Utils.TryParseRange(item, 0, int.MaxValue, out _, out _))
+            || fragmentDelays.Any(item => !Utils.TryParseRange(item, 0, int.MaxValue, out _, out _))
+            || (FragmentMaxSplit.IsNotEmpty() && !Utils.TryParseMaxSplit(FragmentMaxSplit, 0, 10000, out _, out _)))
+        {
+            NoticeManager.Instance.Enqueue(ResUI.FillFragmentParameterError);
+            return;
+        }
         var needReboot = EnableStatistics != _config.GuiItem.EnableStatistics
                           || DisplayRealTimeSpeed != _config.GuiItem.DisplayRealTimeSpeed
                         || EnableDragDropSort != _config.UiItem.EnableDragDropSort
                         || EnableHWA != _config.GuiItem.EnableHWA
                         || CurrentFontFamily != _config.UiItem.CurrentFontFamily;
 
-        //if (Utile.IsNullOrEmpty(Kcpmtu.ToString()) || !Utile.IsNumeric(Kcpmtu.ToString())
-        //       || Utile.IsNullOrEmpty(Kcptti.ToString()) || !Utile.IsNumeric(Kcptti.ToString())
-        //       || Utile.IsNullOrEmpty(KcpuplinkCapacity.ToString()) || !Utile.IsNumeric(KcpuplinkCapacity.ToString())
-        //       || Utile.IsNullOrEmpty(KcpdownlinkCapacity.ToString()) || !Utile.IsNumeric(KcpdownlinkCapacity.ToString())
-        //       || Utile.IsNullOrEmpty(KcpreadBufferSize.ToString()) || !Utile.IsNumeric(KcpreadBufferSize.ToString())
-        //       || Utile.IsNullOrEmpty(KcpwriteBufferSize.ToString()) || !Utile.IsNumeric(KcpwriteBufferSize.ToString()))
-        //{
-        //    NoticeHandler.Instance.Enqueue(ResUI.FillKcpParameters);
-        //    return;
-        //}
-
         //Core
-        _config.Inbound.First().LocalPort = LocalPort;
+        var inbound = _config.Inbound.First();
-        _config.Inbound.First().SecondLocalPortEnabled = SecondLocalPortEnabled;
+        inbound.LocalPort = LocalPort;
-        _config.Inbound.First().UdpEnabled = UdpEnabled;
+        inbound.SecondLocalPortEnabled = SecondLocalPortEnabled;
-        _config.Inbound.First().SniffingEnabled = SniffingEnabled;
+        inbound.UdpEnabled = UdpEnabled;
-        _config.Inbound.First().DestOverride = DestOverride?.ToList();
+        inbound.SniffingEnabled = SniffingEnabled;
-        _config.Inbound.First().RouteOnly = RouteOnly;
+        inbound.DestOverride = DestOverride?.ToList();
-        _config.Inbound.First().AllowLANConn = AllowLANConn;
+        inbound.RouteOnly = RouteOnly;
-        _config.Inbound.First().NewPort4LAN = NewPort4LAN;
+        inbound.AllowLANConn = AllowLANConn;
-        _config.Inbound.First().User = User;
+        inbound.NewPort4LAN = NewPort4LAN;
-        _config.Inbound.First().Pass = Pass;
+        inbound.User = User;
+        inbound.Pass = Pass;
         if (_config.Inbound.Count > 1)
         {
             _config.Inbound.RemoveAt(1);
@@ -351,30 +327,12 @@ public class OptionSettingViewModel : MyReactiveObject, ICloseable
         _config.CoreBasicItem.EnableCacheFile4Sbox = EnableCacheFile4Sbox;
         _config.HysteriaItem.UpMbps = HyUpMbps ?? 0;
         _config.HysteriaItem.DownMbps = HyDownMbps ?? 0;
-        if (EnableFragment)
-        {
-            if (!Utils.TryParseRange(FragmentLength, 0, int.MaxValue, out _, out _))
-            {
-                NoticeManager.Instance.Enqueue(ResUI.FillFragmentParameterError);
-                return;
-            }
-            if (!Utils.TryParseRange(FragmentInterval, 1, 100, out _, out _))
-            {
-                NoticeManager.Instance.Enqueue(ResUI.FillFragmentParameterError);
-                return;
-            }
-            if (FragmentMaxSplit.IsNotEmpty()
-                && !Utils.TryParseMaxSplit(FragmentMaxSplit, 0, 10000, out _, out _))
-            {
-                NoticeManager.Instance.Enqueue(ResUI.FillFragmentParameterError);
-                return;
-            }
-        }
         _config.CoreBasicItem.EnableFragment = EnableFragment;
         _config.CoreBasicItem.EnableFinalFragment = EnableFinalFragment;
+        _config.Fragment4RayItem ??= new();
         _config.Fragment4RayItem.Packets = FragmentPackets;
-        _config.Fragment4RayItem.Length = FragmentLength;
+        _config.Fragment4RayItem.Lengths = fragmentLengths;
-        _config.Fragment4RayItem.Interval = FragmentInterval;
+        _config.Fragment4RayItem.Delays = fragmentDelays;
         _config.Fragment4RayItem.MaxSplit = FragmentMaxSplit;
 
         _config.GuiItem.AutoRun = AutoRun;

v2rayN/v2rayN.Desktop/Views/DNSSettingWindow.axaml

@@ -42,7 +42,7 @@
                         x:Name="gridBasicDNSSettings"
                         Margin="{StaticResource Margin8}"
                         ColumnDefinitions="Auto,Auto,*"
-                        RowDefinitions="Auto,Auto,Auto,Auto,Auto,Auto,Auto,Auto,Auto">
+                        RowDefinitions="Auto,Auto,Auto,Auto,Auto,Auto,Auto,Auto,Auto,Auto,Auto">
 
                         <TextBlock
                             x:Name="txtBasicDNSSettingsInvalid"
@@ -167,28 +167,71 @@
                             Grid.Column="0"
                             Margin="{StaticResource Margin4}"
                             VerticalAlignment="Center"
-                            Text="{x:Static resx:ResUI.TbParallelQuery}" />
+                            Text="{x:Static resx:ResUI.TbProxyDialResolveStrategy}" />
-                        <ToggleSwitch
+                        <ComboBox
-                            x:Name="togParallelQuery"
+                            x:Name="cmbProxyDialDNSStrategy"
                             Grid.Row="7"
                             Grid.Column="1"
+                            Width="200"
                             Margin="{StaticResource Margin4}"
-                            HorizontalAlignment="Left"
+                            VerticalAlignment="Center"
-                            VerticalAlignment="Center" />
+                            PlaceholderText="Default" />
+                        <TextBlock
+                            Grid.Row="7"
+                            Grid.Column="2"
+                            Margin="{StaticResource Margin4}"
+                            VerticalAlignment="Center"
+                            Text="{x:Static resx:ResUI.TbProxyDialResolveStrategyTip}"
+                            TextWrapping="Wrap" />
 
                         <TextBlock
                             Grid.Row="8"
                             Grid.Column="0"
                             Margin="{StaticResource Margin4}"
                             VerticalAlignment="Center"
-                            Text="{x:Static resx:ResUI.TbServeStale}" />
+                            Text="{x:Static resx:ResUI.TbParallelQuery}" />
                         <ToggleSwitch
-                            x:Name="togServeStale"
+                            x:Name="togParallelQuery"
                             Grid.Row="8"
                             Grid.Column="1"
                             Margin="{StaticResource Margin4}"
                             HorizontalAlignment="Left"
                             VerticalAlignment="Center" />
+
+                        <TextBlock
+                            Grid.Row="9"
+                            Grid.Column="0"
+                            Margin="{StaticResource Margin4}"
+                            VerticalAlignment="Center"
+                            Text="{x:Static resx:ResUI.TbServeStale}" />
+                        <ToggleSwitch
+                            x:Name="togServeStale"
+                            Grid.Row="9"
+                            Grid.Column="1"
+                            Margin="{StaticResource Margin4}"
+                            HorizontalAlignment="Left"
+                            VerticalAlignment="Center" />
+
+                        <TextBlock
+                            Grid.Row="10"
+                            Grid.Column="0"
+                            Margin="{StaticResource Margin4}"
+                            VerticalAlignment="Center"
+                            Text="{x:Static resx:ResUI.TbEnableHappyEyeballs}" />
+                        <ToggleSwitch
+                            x:Name="togEnableHappyEyeballs"
+                            Grid.Row="10"
+                            Grid.Column="1"
+                            Margin="{StaticResource Margin4}"
+                            HorizontalAlignment="Left"
+                            VerticalAlignment="Center" />
+                        <TextBlock
+                            Grid.Row="10"
+                            Grid.Column="2"
+                            Margin="{StaticResource Margin4}"
+                            VerticalAlignment="Center"
+                            Text="{x:Static resx:ResUI.TbEnableHappyEyeballsTip}"
+                            TextWrapping="Wrap" />
                     </Grid>
                 </ScrollViewer>
             </TabItem>
@@ -318,8 +361,8 @@
                             VerticalAlignment="Stretch"
                             BorderThickness="1"
                             Classes="TextArea"
-                            TextWrapping="Wrap"
+                            PlaceholderText="{x:Static resx:ResUI.TbDNSHostsConfig}"
-                            PlaceholderText="{x:Static resx:ResUI.TbDNSHostsConfig}" />
+                            TextWrapping="Wrap" />
                     </Grid>
                 </ScrollViewer>
             </TabItem>

v2rayN/v2rayN.Desktop/Views/DNSSettingWindow.axaml.cs

@@ -16,6 +16,7 @@ public partial class DNSSettingWindow : WindowBase<DNSSettingViewModel>
 
         cmbDirectDNSStrategy.ItemsSource = Global.DomainStrategy;
         cmbRemoteDNSStrategy.ItemsSource = Global.DomainStrategy;
+        cmbProxyDialDNSStrategy.ItemsSource = Global.DomainStrategy;
         cmbDirectDNS.ItemsSource = Global.DomainDirectDNSAddress;
         cmbRemoteDNS.ItemsSource = Global.DomainRemoteDNSAddress;
         cmbBootstrapDNS.ItemsSource = Global.DomainPureIPDNSAddress;
@@ -37,10 +38,12 @@ public partial class DNSSettingWindow : WindowBase<DNSSettingViewModel>
             this.Bind(ViewModel, vm => vm.BootstrapDNS, v => v.cmbBootstrapDNS.Text).DisposeWith(disposables);
             this.Bind(ViewModel, vm => vm.Strategy4Freedom, v => v.cmbDirectDNSStrategy.SelectedItem).DisposeWith(disposables);
             this.Bind(ViewModel, vm => vm.Strategy4Proxy, v => v.cmbRemoteDNSStrategy.SelectedItem).DisposeWith(disposables);
+            this.Bind(ViewModel, vm => vm.Strategy4ProxyDial, v => v.cmbProxyDialDNSStrategy.SelectedItem).DisposeWith(disposables);
             this.Bind(ViewModel, vm => vm.Hosts, v => v.txtHosts.Text).DisposeWith(disposables);
             this.Bind(ViewModel, vm => vm.DirectExpectedIPs, v => v.cmbDirectExpectedIPs.Text).DisposeWith(disposables);
             this.Bind(ViewModel, vm => vm.ParallelQuery, v => v.togParallelQuery.IsChecked).DisposeWith(disposables);
             this.Bind(ViewModel, vm => vm.ServeStale, v => v.togServeStale.IsChecked).DisposeWith(disposables);
+            this.Bind(ViewModel, vm => vm.EnableHappyEyeballs, v => v.togEnableHappyEyeballs.IsChecked).DisposeWith(disposables);
 
             this.BindCommand(ViewModel, vm => vm.SaveCmd, v => v.btnSave).DisposeWith(disposables);
 

v2rayN/v2rayN.Desktop/Views/OptionSettingWindow.axaml

@@ -347,7 +347,7 @@
                                                 VerticalAlignment="Center"
                                                 Text="{x:Static resx:ResUI.TbSettingsFragmentLength}" />
                                             <TextBox
-                                                x:Name="txtFragmentLength"
+                                                x:Name="txtFragmentLengths"
                                                 Grid.Row="1"
                                                 Grid.Column="1"
                                                 Width="120"
@@ -369,7 +369,7 @@
                                                 VerticalAlignment="Center"
                                                 Text="{x:Static resx:ResUI.TbSettingsFragmentInterval}" />
                                             <TextBox
-                                                x:Name="txtFragmentInterval"
+                                                x:Name="txtFragmentDelays"
                                                 Grid.Row="2"
                                                 Grid.Column="1"
                                                 Width="120"

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

@@ -86,8 +86,8 @@ public partial class OptionSettingWindow : WindowBase<OptionSettingViewModel>
             this.Bind(ViewModel, vm => vm.EnableFragment, v => v.togenableFragment.IsChecked).DisposeWith(disposables);
             this.Bind(ViewModel, vm => vm.EnableFinalFragment, v => v.togenableFinalFragment.IsChecked).DisposeWith(disposables);
             this.Bind(ViewModel, vm => vm.FragmentPackets, v => v.cmbFragmentPackets.SelectedItem).DisposeWith(disposables);
-            this.Bind(ViewModel, vm => vm.FragmentLength, v => v.txtFragmentLength.Text).DisposeWith(disposables);
+            this.Bind(ViewModel, vm => vm.FragmentLengths, v => v.txtFragmentLengths.Text).DisposeWith(disposables);
-            this.Bind(ViewModel, vm => vm.FragmentInterval, v => v.txtFragmentInterval.Text).DisposeWith(disposables);
+            this.Bind(ViewModel, vm => vm.FragmentDelays, v => v.txtFragmentDelays.Text).DisposeWith(disposables);
             this.Bind(ViewModel, vm => vm.FragmentMaxSplit, v => v.txtFragmentMaxSplit.Text).DisposeWith(disposables);
 
             this.Bind(ViewModel, vm => vm.AutoRun, v => v.togAutoRun.IsChecked).DisposeWith(disposables);

v2rayN/v2rayN/Views/DNSSettingWindow.xaml

@@ -52,6 +52,8 @@
                             <RowDefinition Height="Auto" />
                             <RowDefinition Height="Auto" />
                             <RowDefinition Height="Auto" />
+                            <RowDefinition Height="Auto" />
+                            <RowDefinition Height="Auto" />
                         </Grid.RowDefinitions>
                         <Grid.ColumnDefinitions>
                             <ColumnDefinition Width="Auto" />
@@ -195,13 +197,23 @@
                             Margin="{StaticResource Margin8}"
                             VerticalAlignment="Center"
                             Style="{StaticResource ToolbarTextBlock}"
-                            Text="{x:Static resx:ResUI.TbParallelQuery}" />
+                            Text="{x:Static resx:ResUI.TbProxyDialResolveStrategy}" />
-                        <ToggleButton
+                        <ComboBox
-                            x:Name="togParallelQuery"
+                            x:Name="cmbProxyDialDNSStrategy"
                             Grid.Row="7"
                             Grid.Column="1"
+                            Width="200"
                             Margin="{StaticResource Margin8}"
-                            HorizontalAlignment="Left" />
+                            materialDesign:HintAssist.Hint="Default"
+                            Style="{StaticResource DefComboBox}" />
+                        <TextBlock
+                            Grid.Row="7"
+                            Grid.Column="2"
+                            Margin="{StaticResource Margin8}"
+                            VerticalAlignment="Center"
+                            Style="{StaticResource ToolbarTextBlock}"
+                            Text="{x:Static resx:ResUI.TbProxyDialResolveStrategyTip}"
+                            TextWrapping="Wrap" />
 
                         <TextBlock
                             Grid.Row="8"
@@ -209,13 +221,49 @@
                             Margin="{StaticResource Margin8}"
                             VerticalAlignment="Center"
                             Style="{StaticResource ToolbarTextBlock}"
-                            Text="{x:Static resx:ResUI.TbServeStale}" />
+                            Text="{x:Static resx:ResUI.TbParallelQuery}" />
                         <ToggleButton
-                            x:Name="togServeStale"
+                            x:Name="togParallelQuery"
                             Grid.Row="8"
                             Grid.Column="1"
                             Margin="{StaticResource Margin8}"
                             HorizontalAlignment="Left" />
+
+                        <TextBlock
+                            Grid.Row="9"
+                            Grid.Column="0"
+                            Margin="{StaticResource Margin8}"
+                            VerticalAlignment="Center"
+                            Style="{StaticResource ToolbarTextBlock}"
+                            Text="{x:Static resx:ResUI.TbServeStale}" />
+                        <ToggleButton
+                            x:Name="togServeStale"
+                            Grid.Row="9"
+                            Grid.Column="1"
+                            Margin="{StaticResource Margin8}"
+                            HorizontalAlignment="Left" />
+
+                        <TextBlock
+                            Grid.Row="10"
+                            Grid.Column="0"
+                            Margin="{StaticResource Margin8}"
+                            VerticalAlignment="Center"
+                            Style="{StaticResource ToolbarTextBlock}"
+                            Text="{x:Static resx:ResUI.TbEnableHappyEyeballs}" />
+                        <ToggleButton
+                            x:Name="togEnableHappyEyeballs"
+                            Grid.Row="10"
+                            Grid.Column="1"
+                            Margin="{StaticResource Margin8}"
+                            HorizontalAlignment="Left" />
+                        <TextBlock
+                            Grid.Row="10"
+                            Grid.Column="2"
+                            Margin="{StaticResource Margin8}"
+                            VerticalAlignment="Center"
+                            Style="{StaticResource ToolbarTextBlock}"
+                            Text="{x:Static resx:ResUI.TbEnableHappyEyeballsTip}"
+                            TextWrapping="Wrap" />
                     </Grid>
                 </ScrollViewer>
             </TabItem>

v2rayN/v2rayN/Views/DNSSettingWindow.xaml.cs

@@ -12,6 +12,7 @@ public partial class DNSSettingWindow
 
         cmbDirectDNSStrategy.ItemsSource = Global.DomainStrategy;
         cmbRemoteDNSStrategy.ItemsSource = Global.DomainStrategy;
+        cmbProxyDialDNSStrategy.ItemsSource = Global.DomainStrategy;
         cmbDirectDNS.ItemsSource = Global.DomainDirectDNSAddress;
         cmbRemoteDNS.ItemsSource = Global.DomainRemoteDNSAddress;
         cmbBootstrapDNS.ItemsSource = Global.DomainPureIPDNSAddress;
@@ -33,10 +34,12 @@ public partial class DNSSettingWindow
             this.Bind(ViewModel, vm => vm.BootstrapDNS, v => v.cmbBootstrapDNS.Text).DisposeWith(disposables);
             this.Bind(ViewModel, vm => vm.Strategy4Freedom, v => v.cmbDirectDNSStrategy.SelectedItem).DisposeWith(disposables);
             this.Bind(ViewModel, vm => vm.Strategy4Proxy, v => v.cmbRemoteDNSStrategy.SelectedItem).DisposeWith(disposables);
+            this.Bind(ViewModel, vm => vm.Strategy4ProxyDial, v => v.cmbProxyDialDNSStrategy.SelectedItem).DisposeWith(disposables);
             this.Bind(ViewModel, vm => vm.Hosts, v => v.txtHosts.Text).DisposeWith(disposables);
             this.Bind(ViewModel, vm => vm.DirectExpectedIPs, v => v.cmbDirectExpectedIPs.Text).DisposeWith(disposables);
             this.Bind(ViewModel, vm => vm.ParallelQuery, v => v.togParallelQuery.IsChecked).DisposeWith(disposables);
             this.Bind(ViewModel, vm => vm.ServeStale, v => v.togServeStale.IsChecked).DisposeWith(disposables);
+            this.Bind(ViewModel, vm => vm.EnableHappyEyeballs, v => v.togEnableHappyEyeballs.IsChecked).DisposeWith(disposables);
 
             this.BindCommand(ViewModel, vm => vm.SaveCmd, v => v.btnSave).DisposeWith(disposables);
 

v2rayN/v2rayN/Views/OptionSettingWindow.xaml

@@ -419,7 +419,7 @@
                                         Text="{x:Static resx:ResUI.TbSettingsFragmentLength}"
                                         TextWrapping="Wrap" />
                                     <TextBox
-                                        x:Name="txtFragmentLength"
+                                        x:Name="txtFragmentLengths"
                                         Grid.Row="1"
                                         Grid.Column="1"
                                         Width="200"
@@ -437,7 +437,7 @@
                                         Text="{x:Static resx:ResUI.TbSettingsFragmentInterval}"
                                         TextWrapping="Wrap" />
                                     <TextBox
-                                        x:Name="txtFragmentInterval"
+                                        x:Name="txtFragmentDelays"
                                         Grid.Row="2"
                                         Grid.Column="1"
                                         Width="200"

v2rayN/v2rayN/Views/OptionSettingWindow.xaml.cs

@@ -82,8 +82,8 @@ public partial class OptionSettingWindow
             this.Bind(ViewModel, vm => vm.EnableFragment, v => v.togenableFragment.IsChecked).DisposeWith(disposables);
             this.Bind(ViewModel, vm => vm.EnableFinalFragment, v => v.togenableFinalFragment.IsChecked).DisposeWith(disposables);
             this.Bind(ViewModel, vm => vm.FragmentPackets, v => v.cmbFragmentPackets.Text).DisposeWith(disposables);
-            this.Bind(ViewModel, vm => vm.FragmentLength, v => v.txtFragmentLength.Text).DisposeWith(disposables);
+            this.Bind(ViewModel, vm => vm.FragmentLengths, v => v.txtFragmentLengths.Text).DisposeWith(disposables);
-            this.Bind(ViewModel, vm => vm.FragmentInterval, v => v.txtFragmentInterval.Text).DisposeWith(disposables);
+            this.Bind(ViewModel, vm => vm.FragmentDelays, v => v.txtFragmentDelays.Text).DisposeWith(disposables);
             this.Bind(ViewModel, vm => vm.FragmentMaxSplit, v => v.txtFragmentMaxSplit.Text).DisposeWith(disposables);
 
             //this.Bind(ViewModel, vm => vm.Kcpmtu, v => v.txtKcpmtu.Text).DisposeWith(disposables);