Refactor reload logic with semaphore for concurrency

https://github.com/2dust/v2rayN/issues/8276

v2rayN/Directory.Build.props

@@ -1,7 +1,7 @@
 <Project>
 
     <PropertyGroup>
-        <Version>7.15.7</Version>
+        <Version>7.16.0</Version>
     </PropertyGroup>
 
     <PropertyGroup>

v2rayN/Directory.Packages.props

@@ -14,7 +14,7 @@
     <PackageVersion Include="Downloader" Version="4.0.3" />
     <PackageVersion Include="H.NotifyIcon.Wpf" Version="2.3.2" />
     <PackageVersion Include="MaterialDesignThemes" Version="5.3.0" />
-    <PackageVersion Include="MessageBox.Avalonia" Version="3.2.0" />
+    <PackageVersion Include="MessageBox.Avalonia" Version="3.3.0" />
     <PackageVersion Include="QRCoder" Version="1.7.0" />
     <PackageVersion Include="ReactiveUI" Version="22.2.1" />
     <PackageVersion Include="ReactiveUI.Fody" Version="19.5.41" />

v2rayN/ServiceLib/Handler/ConfigHandler.cs

@@ -97,7 +97,7 @@ public static class ConfigHandler
 
         config.UiItem ??= new UIItem()
         {
-            EnableAutoAdjustMainLvColWidth = true
+            EnableUpdateSubOnlyRemarksExist = true
         };
         config.UiItem.MainColumnItem ??= new();
         config.UiItem.WindowSizeItem ??= new();

v2rayN/ServiceLib/Handler/Fmt/AnytlsFmt.cs

@@ -23,7 +23,7 @@ public class AnytlsFmt : BaseFmt
         item.Id = rawUserInfo;
 
         var query = Utils.ParseQueryString(parsedUrl.Query);
-        _ = ResolveStdTransport(query, ref item);
+        ResolveUriQuery(query, ref item);
 
         return item;
     }
@@ -41,7 +41,7 @@ public class AnytlsFmt : BaseFmt
         }
         var pw = item.Id;
         var dicQuery = new Dictionary<string, string>();
-        _ = GetStdTransport(item, Global.None, ref dicQuery);
+        ToUriQuery(item, Global.None, ref dicQuery);
 
         return ToUri(EConfigType.Anytls, item.Address, item.Port, pw, dicQuery, remark);
     }

v2rayN/ServiceLib/Handler/Fmt/BaseFmt.cs

@@ -4,6 +4,8 @@ namespace ServiceLib.Handler.Fmt;
 
 public class BaseFmt
 {
+    private static readonly string[] _allowInsecureArray = new[] { "insecure", "allowInsecure", "allow_insecure", "verify" };
+
     protected static string GetIpv6(string address)
     {
         if (Utils.IsIpv6(address))
@@ -17,7 +19,7 @@ public class BaseFmt
         }
     }
 
-    protected static int GetStdTransport(ProfileItem item, string? securityDef, ref Dictionary<string, string> dicQuery)
+    protected static int ToUriQuery(ProfileItem item, string? securityDef, ref Dictionary<string, string> dicQuery)
     {
         if (item.Flow.IsNotEmpty())
         {
@@ -37,11 +39,7 @@ public class BaseFmt
         }
         if (item.Sni.IsNotEmpty())
         {
-            dicQuery.Add("sni", item.Sni);
-        }
-        if (item.Alpn.IsNotEmpty())
-        {
-            dicQuery.Add("alpn", Utils.UrlEncode(item.Alpn));
+            dicQuery.Add("sni", Utils.UrlEncode(item.Sni));
         }
         if (item.Fingerprint.IsNotEmpty())
         {
@@ -63,9 +61,14 @@ public class BaseFmt
         {
             dicQuery.Add("pqv", Utils.UrlEncode(item.Mldsa65Verify));
         }
-        if (item.AllowInsecure.Equals("true"))
+
+        if (item.StreamSecurity.Equals(Global.StreamSecurity))
         {
-            dicQuery.Add("allowInsecure", "1");
+            if (item.Alpn.IsNotEmpty())
+            {
+                dicQuery.Add("alpn", Utils.UrlEncode(item.Alpn));
+            }
+            ToUriQueryAllowInsecure(item, ref dicQuery);
         }
 
         dicQuery.Add("type", item.Network.IsNotEmpty() ? item.Network : nameof(ETransport.tcp));
@@ -153,7 +156,40 @@ public class BaseFmt
         return 0;
     }
 
-    protected static int ResolveStdTransport(NameValueCollection query, ref ProfileItem item)
+    protected static int ToUriQueryLite(ProfileItem item, ref Dictionary<string, string> dicQuery)
+    {
+        if (item.Sni.IsNotEmpty())
+        {
+            dicQuery.Add("sni", Utils.UrlEncode(item.Sni));
+        }
+        if (item.Alpn.IsNotEmpty())
+        {
+            dicQuery.Add("alpn", Utils.UrlEncode(item.Alpn));
+        }
+
+        ToUriQueryAllowInsecure(item, ref dicQuery);
+
+        return 0;
+    }
+
+    private static int ToUriQueryAllowInsecure(ProfileItem item, ref Dictionary<string, string> dicQuery)
+    {
+        if (item.AllowInsecure.Equals(Global.AllowInsecure.First()))
+        {
+            // Add two for compatibility
+            dicQuery.Add("insecure", "1");
+            dicQuery.Add("allowInsecure", "1");
+        }
+        else
+        {
+            dicQuery.Add("insecure", "0");
+            dicQuery.Add("allowInsecure", "0");
+        }
+
+        return 0;
+    }
+
+    protected static int ResolveUriQuery(NameValueCollection query, ref ProfileItem item)
     {
         item.Flow = GetQueryValue(query, "flow");
         item.StreamSecurity = GetQueryValue(query, "security");
@@ -164,7 +200,19 @@ public class BaseFmt
         item.ShortId = GetQueryDecoded(query, "sid");
         item.SpiderX = GetQueryDecoded(query, "spx");
         item.Mldsa65Verify = GetQueryDecoded(query, "pqv");
-        item.AllowInsecure = new[] { "allowInsecure", "allow_insecure", "insecure" }.Any(k => (query[k] ?? "") == "1") ? "true" : "";
+
+        if (_allowInsecureArray.Any(k => GetQueryDecoded(query, k) == "1"))
+        {
+            item.AllowInsecure = Global.AllowInsecure.First();
+        }
+        else if (_allowInsecureArray.Any(k => GetQueryDecoded(query, k) == "0"))
+        {
+            item.AllowInsecure = Global.AllowInsecure.Skip(1).First();
+        }
+        else
+        {
+            item.AllowInsecure = string.Empty;
+        }
 
         item.Network = GetQueryValue(query, "type", nameof(ETransport.tcp));
         switch (item.Network)

v2rayN/ServiceLib/Handler/Fmt/Hysteria2Fmt.cs

@@ -22,10 +22,8 @@ public class Hysteria2Fmt : BaseFmt
         item.Id = Utils.UrlDecode(url.UserInfo);
 
         var query = Utils.ParseQueryString(url.Query);
-        ResolveStdTransport(query, ref item);
+        ResolveUriQuery(query, ref item);
         item.Path = GetQueryDecoded(query, "obfs-password");
-        item.AllowInsecure = GetQueryValue(query, "insecure") == "1" ? "true" : "false";
-
         item.Ports = GetQueryDecoded(query, "mport");
 
         return item;
@@ -46,20 +44,13 @@ public class Hysteria2Fmt : BaseFmt
             remark = "#" + Utils.UrlEncode(item.Remarks);
         }
         var dicQuery = new Dictionary<string, string>();
-        if (item.Sni.IsNotEmpty())
-        {
-            dicQuery.Add("sni", item.Sni);
-        }
-        if (item.Alpn.IsNotEmpty())
-        {
-            dicQuery.Add("alpn", Utils.UrlEncode(item.Alpn));
-        }
+        ToUriQueryLite(item, ref dicQuery);
+       
         if (item.Path.IsNotEmpty())
         {
             dicQuery.Add("obfs", "salamander");
             dicQuery.Add("obfs-password", Utils.UrlEncode(item.Path));
         }
-        dicQuery.Add("insecure", item.AllowInsecure.ToLower() == "true" ? "1" : "0");
         if (item.Ports.IsNotEmpty())
         {
             dicQuery.Add("mport", Utils.UrlEncode(item.Ports.Replace(':', '-')));

v2rayN/ServiceLib/Handler/Fmt/TrojanFmt.cs

@@ -23,7 +23,7 @@ public class TrojanFmt : BaseFmt
         item.Id = Utils.UrlDecode(url.UserInfo);
 
         var query = Utils.ParseQueryString(url.Query);
-        _ = ResolveStdTransport(query, ref item);
+        ResolveUriQuery(query, ref item);
 
         return item;
     }
@@ -40,7 +40,7 @@ public class TrojanFmt : BaseFmt
             remark = "#" + Utils.UrlEncode(item.Remarks);
         }
         var dicQuery = new Dictionary<string, string>();
-        _ = GetStdTransport(item, null, ref dicQuery);
+        ToUriQuery(item, null, ref dicQuery);
 
         return ToUri(EConfigType.Trojan, item.Address, item.Port, item.Id, dicQuery, remark);
     }

v2rayN/ServiceLib/Handler/Fmt/TuicFmt.cs

@@ -29,7 +29,7 @@ public class TuicFmt : BaseFmt
         }
 
         var query = Utils.ParseQueryString(url.Query);
-        ResolveStdTransport(query, ref item);
+        ResolveUriQuery(query, ref item);
         item.HeaderType = GetQueryValue(query, "congestion_control");
 
         return item;
@@ -47,15 +47,10 @@ public class TuicFmt : BaseFmt
         {
             remark = "#" + Utils.UrlEncode(item.Remarks);
         }
+
         var dicQuery = new Dictionary<string, string>();
-        if (item.Sni.IsNotEmpty())
-        {
-            dicQuery.Add("sni", item.Sni);
-        }
-        if (item.Alpn.IsNotEmpty())
-        {
-            dicQuery.Add("alpn", Utils.UrlEncode(item.Alpn));
-        }
+        ToUriQueryLite(item, ref dicQuery);
+
         dicQuery.Add("congestion_control", item.HeaderType);
 
         return ToUri(EConfigType.TUIC, item.Address, item.Port, $"{item.Id}:{item.Security}", dicQuery, remark);

v2rayN/ServiceLib/Handler/Fmt/VLESSFmt.cs

@@ -26,7 +26,7 @@ public class VLESSFmt : BaseFmt
         var query = Utils.ParseQueryString(url.Query);
         item.Security = GetQueryValue(query, "encryption", Global.None);
         item.StreamSecurity = GetQueryValue(query, "security");
-        _ = ResolveStdTransport(query, ref item);
+        ResolveUriQuery(query, ref item);
 
         return item;
     }
@@ -52,7 +52,7 @@ public class VLESSFmt : BaseFmt
         {
             dicQuery.Add("encryption", Global.None);
         }
-        _ = GetStdTransport(item, Global.None, ref dicQuery);
+        ToUriQuery(item, Global.None, ref dicQuery);
 
         return ToUri(EConfigType.VLESS, item.Address, item.Port, item.Id, dicQuery, remark);
     }

v2rayN/ServiceLib/Handler/Fmt/VmessFmt.cs

@@ -39,7 +39,8 @@ public class VmessFmt : BaseFmt
             tls = item.StreamSecurity,
             sni = item.Sni,
             alpn = item.Alpn,
-            fp = item.Fingerprint
+            fp = item.Fingerprint,
+            insecure = item.AllowInsecure.Equals(Global.AllowInsecure.First()) ? "1" : "0"
         };
 
         var url = JsonUtils.Serialize(vmessQRCode);
@@ -94,6 +95,7 @@ public class VmessFmt : BaseFmt
         item.Sni = Utils.ToString(vmessQRCode.sni);
         item.Alpn = Utils.ToString(vmessQRCode.alpn);
         item.Fingerprint = Utils.ToString(vmessQRCode.fp);
+        item.AllowInsecure = vmessQRCode.insecure == "1" ? Global.AllowInsecure.First() : string.Empty;
 
         return item;
     }
@@ -118,7 +120,7 @@ public class VmessFmt : BaseFmt
         item.Id = Utils.UrlDecode(url.UserInfo);
 
         var query = Utils.ParseQueryString(url.Query);
-        ResolveStdTransport(query, ref item);
+        ResolveUriQuery(query, ref item);
 
         return item;
     }

v2rayN/ServiceLib/Handler/SysProxy/ProxySettingLinux.cs

@@ -18,7 +18,13 @@ public static class ProxySettingLinux
 
     private static async Task ExecCmd(List<string> args)
     {
-        var fileName = await FileUtils.CreateLinuxShellFile(_proxySetFileName, EmbedUtils.GetEmbedText(Global.ProxySetLinuxShellFileName), false);
+        var customSystemProxyScriptPath = AppManager.Instance.Config.SystemProxyItem?.CustomSystemProxyScriptPath;
+        var fileName = (customSystemProxyScriptPath.IsNotEmpty() && File.Exists(customSystemProxyScriptPath))
+            ? customSystemProxyScriptPath
+            : await FileUtils.CreateLinuxShellFile(_proxySetFileName, EmbedUtils.GetEmbedText(Global.ProxySetLinuxShellFileName), false);
+
+        // TODO: temporarily notify which script is being used
+        NoticeManager.Instance.SendMessage(fileName);
 
         await Utils.GetCliWrapOutput(fileName, args);
     }

v2rayN/ServiceLib/Handler/SysProxy/ProxySettingOSX.cs

@@ -23,7 +23,13 @@ public static class ProxySettingOSX
 
     private static async Task ExecCmd(List<string> args)
     {
-        var fileName = await FileUtils.CreateLinuxShellFile(_proxySetFileName, EmbedUtils.GetEmbedText(Global.ProxySetOSXShellFileName), false);
+        var customSystemProxyScriptPath = AppManager.Instance.Config.SystemProxyItem?.CustomSystemProxyScriptPath;
+        var fileName = (customSystemProxyScriptPath.IsNotEmpty() && File.Exists(customSystemProxyScriptPath))
+            ? customSystemProxyScriptPath
+            : await FileUtils.CreateLinuxShellFile(_proxySetFileName, EmbedUtils.GetEmbedText(Global.ProxySetOSXShellFileName), false);
+
+        // TODO: temporarily notify which script is being used
+        NoticeManager.Instance.SendMessage(fileName);
 
         await Utils.GetCliWrapOutput(fileName, args);
     }

v2rayN/ServiceLib/Handler/SysProxy/SysProxyHandler.cs

@@ -91,7 +91,7 @@ public static class SysProxyHandler
     private static async Task SetWindowsProxyPac(int port)
     {
         var portPac = AppManager.Instance.GetLocalPort(EInboundProtocol.pac);
-        await PacManager.Instance.StartAsync(Utils.GetConfigPath(), port, portPac);
+        await PacManager.Instance.StartAsync(port, portPac);
         var strProxy = $"{Global.HttpProtocol}{Global.Loopback}:{portPac}/pac?t={DateTime.Now.Ticks}";
         ProxySettingWindows.SetProxy(strProxy, "", 4);
     }

v2rayN/ServiceLib/Manager/CertPemManager.cs

@@ -45,7 +45,7 @@ public class CertPemManager
         "2530CC8E98321502BAD96F9B1FBA1B099E2D299E0F4548BB914F363BC0D4531F", // Izenpe.com
         "45140B3247EB9CC8C5B4F0D7B53091F73292089E6E5A63E2749DD3ACA9198EDA", // Go Daddy Root Certificate Authority - G2
         "2CE1CB0BF9D2F9E102993FBE215152C3B2DD0CABDE1C68E5319B839154DBB7F5", // Starfield Root Certificate Authority - G2
-        "568D6905A2C88708A4B3025190EDCFEDB1974A606A13C6E5290FCB2AE63EDAB5", // Starfield Services Root Certificate Authority - G2  
+        "568D6905A2C88708A4B3025190EDCFEDB1974A606A13C6E5290FCB2AE63EDAB5", // Starfield Services Root Certificate Authority - G2
         "0376AB1D54C5F9803CE4B2E201A0EE7EEF7B57B636E8A93C9B8D4860C96F5FA7", // AffirmTrust Commercial
         "0A81EC5A929777F145904AF38D5D509F66B5E2C58FCDB531058B0E17F3F0B41B", // AffirmTrust Networking
         "70A73F7F376B60074248904534B11482D5BF0E698ECC498DF52577EBF2E93B9A", // AffirmTrust Premium
@@ -95,11 +95,11 @@ public class CertPemManager
         "18CE6CFE7BF14E60B2E347B8DFE868CB31D02EBB3ADA271569F50343B46DB3A4", // Amazon Root CA 3
         "E35D28419ED02025CFA69038CD623962458DA5C695FBDEA3C22B0BFB25897092", // Amazon Root CA 4
         "A1A86D04121EB87F027C66F53303C28E5739F943FC84B38AD6AF009035DD9457", // D-TRUST Root CA 3 2013
-        "46EDC3689046D53A453FB3104AB80DCAEC658B2660EA1629DD7E867990648716", // TUBITAK Kamu SM SSL Kok Sertifikasi - Surum 1       
+        "46EDC3689046D53A453FB3104AB80DCAEC658B2660EA1629DD7E867990648716", // TUBITAK Kamu SM SSL Kok Sertifikasi - Surum 1
         "BFFF8FD04433487D6A8AA60C1A29767A9FC2BBB05E420F713A13B992891D3893", // GDCA TrustAUTH R5 ROOT
         "85666A562EE0BE5CE925C1D8890A6F76A87EC16D4D7D5F29EA7419CF20123B69", // SSL.com Root Certification Authority RSA
         "3417BB06CC6007DA1B961C920B8AB4CE3FAD820E4AA30B9ACBC4A74EBDCEBC65", // SSL.com Root Certification Authority ECC
-        "2E7BF16CC22485A7BBE2AA8696750761B0AE39BE3B2FE9D0CC6D4EF73491425C", // SSL.com EV Root Certification Authority RSA R2      
+        "2E7BF16CC22485A7BBE2AA8696750761B0AE39BE3B2FE9D0CC6D4EF73491425C", // SSL.com EV Root Certification Authority RSA R2
         "22A2C1F7BDED704CC1E701B5F408C310880FE956B5DE2A4A44F99C873A25A7C8", // SSL.com EV Root Certification Authority ECC
         "2CABEAFE37D06CA22ABA7391C0033D25982952C453647349763A3AB5AD6CCF69", // GlobalSign Root CA - R6
         "8560F91C3624DABA9570B5FEA0DBE36FF11A8323BE9486854FB3F34A5571198D", // OISTE WISeKey Global Root GC CA
@@ -112,13 +112,13 @@ public class CertPemManager
         "BC4D809B15189D78DB3E1D8CF4F9726A795DA1643CA5F1358E1DDB0EDC0D7EB3", // emSign ECC Root CA - C3
         "5A2FC03F0C83B090BBFA40604B0988446C7636183DF9846E17101A447FB8EFD6", // Hongkong Post Root CA 3
         "DB3517D1F6732A2D5AB97C533EC70779EE3270A62FB4AC4238372460E6F01E88", // Entrust Root Certification Authority - G4
-        "358DF39D764AF9E1B766E9C972DF352EE15CFAC227AF6AD1D70E8E4A6EDCBA02", // Microsoft ECC Root Certificate Authority 2017       
-        "C741F70F4B2A8D88BF2E71C14122EF53EF10EBA0CFA5E64CFA20F418853073E0", // Microsoft RSA Root Certificate Authority 2017       
+        "358DF39D764AF9E1B766E9C972DF352EE15CFAC227AF6AD1D70E8E4A6EDCBA02", // Microsoft ECC Root Certificate Authority 2017
+        "C741F70F4B2A8D88BF2E71C14122EF53EF10EBA0CFA5E64CFA20F418853073E0", // Microsoft RSA Root Certificate Authority 2017
         "BEB00B30839B9BC32C32E4447905950641F26421B15ED089198B518AE2EA1B99", // e-Szigno Root CA 2017
         "657CFE2FA73FAA38462571F332A2363A46FCE7020951710702CDFBB6EEDA3305", // certSIGN Root CA G2
         "97552015F5DDFC3C8788C006944555408894450084F100867086BC1A2BB58DC8", // Trustwave Global Certification Authority
-        "945BBC825EA554F489D1FD51A73DDF2EA624AC7019A05205225C22A78CCFA8B4", // Trustwave Global ECC P256 Certification Authority   
-        "55903859C8C0C3EBB8759ECE4E2557225FF5758BBD38EBD48276601E1BD58097", // Trustwave Global ECC P384 Certification Authority   
+        "945BBC825EA554F489D1FD51A73DDF2EA624AC7019A05205225C22A78CCFA8B4", // Trustwave Global ECC P256 Certification Authority
+        "55903859C8C0C3EBB8759ECE4E2557225FF5758BBD38EBD48276601E1BD58097", // Trustwave Global ECC P384 Certification Authority
         "88F438DCF8FFD1FA8F429115FFE5F82AE1E06E0C70C375FAAD717B34A49E7265", // NAVER Global Root Certification Authority
         "554153B13D2CF9DDB753BFBE1A4E0AE08D0AA4187058FE60A2B862B2E4B87BCB", // AC RAIZ FNMT-RCM SERVIDORES SEGUROS
         "319AF0A7729E6F89269C131EA6A3A16FCD86389FDCAB3C47A4A675C161A3F974", // GlobalSign Secure Mail Root R45
@@ -161,8 +161,8 @@ public class CertPemManager
         "48E1CF9E43B688A51044160F46D773B8277FE45BEAAD0E4DF90D1974382FEA99", // LAWtrust Root CA2 (4096)
         "22D9599234D60F1D4BC7C7E96F43FA555B07301FD475175089DAFB8C25E477B3", // Sectigo Public Email Protection Root E46
         "D5917A7791EB7CF20A2E57EB98284A67B28A57E89182DA53D546678C9FDE2B4F", // Sectigo Public Email Protection Root R46
-        "C90F26F0FB1B4018B22227519B5CA2B53E2CA5B3BE5CF18EFE1BEF47380C5383", // Sectigo Public Server Authentication Root E46       
-        "7BB647A62AEEAC88BF257AA522D01FFEA395E0AB45C73F93F65654EC38F25A06", // Sectigo Public Server Authentication Root R46       
+        "C90F26F0FB1B4018B22227519B5CA2B53E2CA5B3BE5CF18EFE1BEF47380C5383", // Sectigo Public Server Authentication Root E46
+        "7BB647A62AEEAC88BF257AA522D01FFEA395E0AB45C73F93F65654EC38F25A06", // Sectigo Public Server Authentication Root R46
         "8FAF7D2E2CB4709BB8E0B33666BF75A5DD45B5DE480F8EA8D4BFE6BEBC17F2ED", // SSL.com TLS RSA Root CA 2022
         "C32FFD9F46F936D16C3673990959434B9AD60AAFBB9E7CF33654F144CC1BA143", // SSL.com TLS ECC Root CA 2022
         "AD7DD58D03AEDB22A30B5084394920CE12230C2D8017AD9B81AB04079BDD026B", // SSL.com Client ECC Root CA 2022
@@ -202,14 +202,17 @@ public class CertPemManager
     /// <summary>
     /// Get certificate in PEM format from a server with CA pinning validation
     /// </summary>
-    public async Task<string?> GetCertPemAsync(string target, string serverName)
+    public async Task<(string?, string?)> GetCertPemAsync(string target, string serverName, int timeout = 10)
     {
         try
         {
             var (domain, _, port, _) = Utils.ParseUrl(target);
 
+            using var cts = new CancellationTokenSource();
+            cts.CancelAfter(TimeSpan.FromSeconds(timeout));
+
             using var client = new TcpClient();
-            await client.ConnectAsync(domain, port > 0 ? port : 443);
+            await client.ConnectAsync(domain, port > 0 ? port : 443, cts.Token);
 
             using var ssl = new SslStream(client.GetStream(), false, ValidateServerCertificate);
 
@@ -218,31 +221,39 @@ public class CertPemManager
             var remote = ssl.RemoteCertificate;
             if (remote == null)
             {
-                return null;
+                return (null, null);
             }
 
             var leaf = new X509Certificate2(remote);
-            return ExportCertToPem(leaf);
+            return (ExportCertToPem(leaf), null);
+        }
+        catch (OperationCanceledException)
+        {
+            Logging.SaveLog(_tag, new TimeoutException($"Connection timeout after {timeout} seconds"));
+            return (null, $"Connection timeout after {timeout} seconds");
         }
         catch (Exception ex)
         {
             Logging.SaveLog(_tag, ex);
-            return null;
+            return (null, ex.Message);
         }
     }
 
     /// <summary>
     /// Get certificate chain in PEM format from a server with CA pinning validation
     /// </summary>
-    public async Task<List<string>> GetCertChainPemAsync(string target, string serverName)
+    public async Task<(List<string>, string?)> GetCertChainPemAsync(string target, string serverName, int timeout = 10)
     {
+        var pemList = new List<string>();
         try
         {
-            var pemList = new List<string>();
             var (domain, _, port, _) = Utils.ParseUrl(target);
 
+            using var cts = new CancellationTokenSource();
+            cts.CancelAfter(TimeSpan.FromSeconds(timeout));
+
             using var client = new TcpClient();
-            await client.ConnectAsync(domain, port > 0 ? port : 443);
+            await client.ConnectAsync(domain, port > 0 ? port : 443, cts.Token);
 
             using var ssl = new SslStream(client.GetStream(), false, ValidateServerCertificate);
 
@@ -250,7 +261,7 @@ public class CertPemManager
 
             if (ssl.RemoteCertificate is not X509Certificate2 certChain)
             {
-                return pemList;
+                return (pemList, null);
             }
 
             var chain = new X509Chain();
@@ -262,12 +273,17 @@ public class CertPemManager
                 pemList.Add(pem);
             }
 
-            return pemList;
+            return (pemList, null);
+        }
+        catch (OperationCanceledException)
+        {
+            Logging.SaveLog(_tag, new TimeoutException($"Connection timeout after {timeout} seconds"));
+            return (pemList, $"Connection timeout after {timeout} seconds");
         }
         catch (Exception ex)
         {
             Logging.SaveLog(_tag, ex);
-            return new List<string>();
+            return (pemList, ex.Message);
         }
     }
 

v2rayN/ServiceLib/Manager/PacManager.cs

@@ -5,7 +5,6 @@ public class PacManager
     private static readonly Lazy<PacManager> _instance = new(() => new PacManager());
     public static PacManager Instance => _instance.Value;
 
-    private string _configPath;
     private int _httpPort;
     private int _pacPort;
     private TcpListener? _tcpListener;
@@ -13,11 +12,10 @@ public class PacManager
     private bool _isRunning;
     private bool _needRestart = true;
 
-    public async Task StartAsync(string configPath, int httpPort, int pacPort)
+    public async Task StartAsync(int httpPort, int pacPort)
     {
-        _needRestart = configPath != _configPath || httpPort != _httpPort || pacPort != _pacPort || !_isRunning;
+        _needRestart = httpPort != _httpPort || pacPort != _pacPort || !_isRunning;
 
-        _configPath = configPath;
         _httpPort = httpPort;
         _pacPort = pacPort;
 
@@ -32,22 +30,22 @@ public class PacManager
 
     private async Task InitText()
     {
-        var path = Path.Combine(_configPath, "pac.txt");
+        var customSystemProxyPacPath = AppManager.Instance.Config.SystemProxyItem?.CustomSystemProxyPacPath;
+        var fileName = (customSystemProxyPacPath.IsNotEmpty() && File.Exists(customSystemProxyPacPath))
+            ? customSystemProxyPacPath
+            : Path.Combine(Utils.GetConfigPath(), "pac.txt");
 
-        // Delete the old pac file
-        if (File.Exists(path) && Utils.GetFileHash(path).Equals("b590c07280f058ef05d5394aa2f927fe"))
-        {
-            File.Delete(path);
-        }
+        // TODO: temporarily notify which script is being used
+        NoticeManager.Instance.SendMessage(fileName);
 
-        if (!File.Exists(path))
+        if (!File.Exists(fileName))
         {
             var pac = EmbedUtils.GetEmbedText(Global.PacFileName);
-            await File.AppendAllTextAsync(path, pac);
+            await File.AppendAllTextAsync(fileName, pac);
         }
 
-        var pacText =
-            (await File.ReadAllTextAsync(path)).Replace("__PROXY__", $"PROXY 127.0.0.1:{_httpPort};DIRECT;");
+        var pacText = await File.ReadAllTextAsync(fileName);
+        pacText = pacText.Replace("__PROXY__", $"PROXY 127.0.0.1:{_httpPort};DIRECT;");
 
         var sb = new StringBuilder();
         sb.AppendLine("HTTP/1.0 200 OK");

v2rayN/ServiceLib/Models/ConfigItems.cs

@@ -219,6 +219,8 @@ public class SystemProxyItem
     public string SystemProxyExceptions { get; set; }
     public bool NotProxyLocalAddress { get; set; } = true;
     public string SystemProxyAdvancedProtocol { get; set; }
+    public string? CustomSystemProxyPacPath { get; set; }
+    public string? CustomSystemProxyScriptPath { get; set; }
 }
 
 [Serializable]

v2rayN/ServiceLib/Models/VmessQRCode.cs

@@ -38,4 +38,6 @@ public class VmessQRCode
     public string alpn { get; set; } = string.Empty;
 
     public string fp { get; set; } = string.Empty;
+
+    public string insecure { get; set; } = string.Empty;
 }

v2rayN/ServiceLib/Resx/ResUI.Designer.cs

@@ -3508,6 +3508,24 @@ namespace ServiceLib.Resx {
             }
         }
         
+        /// <summary>
+        ///   查找类似 Custom PAC file path 的本地化字符串。
+        /// </summary>
+        public static string TbSettingsCustomSystemProxyPacPath {
+            get {
+                return ResourceManager.GetString("TbSettingsCustomSystemProxyPacPath", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   查找类似 Custom system proxy script file path 的本地化字符串。
+        /// </summary>
+        public static string TbSettingsCustomSystemProxyScriptPath {
+            get {
+                return ResourceManager.GetString("TbSettingsCustomSystemProxyScriptPath", resourceCulture);
+            }
+        }
+        
         /// <summary>
         ///   查找类似 Allow Insecure 的本地化字符串。
         /// </summary>

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

@@ -1624,4 +1624,10 @@ Do not use the "Fetch Certificate" button when "Allow Insecure" is enabled.</val
   <data name="CertSet" xml:space="preserve">
     <value>Certificate set</value>
   </data>
+  <data name="TbSettingsCustomSystemProxyPacPath" xml:space="preserve">
+    <value>Custom PAC file path</value>
+  </data>
+  <data name="TbSettingsCustomSystemProxyScriptPath" xml:space="preserve">
+    <value>Custom system proxy script file path</value>
+  </data>
 </root>

v2rayN/ServiceLib/Resx/ResUI.fr.resx

@@ -1621,4 +1621,10 @@ Ne pas utiliser « Obtenir le certificat » si « Autoriser non sécurisé » es
   <data name="CertSet" xml:space="preserve">
     <value>Certificat configuré </value>
   </data>
+  <data name="TbSettingsCustomSystemProxyPacPath" xml:space="preserve">
+    <value>Chemin fichier PAC personnalisé</value>
+  </data>
+  <data name="TbSettingsCustomSystemProxyScriptPath" xml:space="preserve">
+    <value>Chemin script proxy système personnalisé</value>
+  </data>
 </root>

v2rayN/ServiceLib/Resx/ResUI.hu.resx

@@ -1624,4 +1624,10 @@ Do not use the "Fetch Certificate" button when "Allow Insecure" is enabled.</val
   <data name="CertSet" xml:space="preserve">
     <value>Certificate set</value>
   </data>
+  <data name="TbSettingsCustomSystemProxyPacPath" xml:space="preserve">
+    <value>Custom PAC file path</value>
+  </data>
+  <data name="TbSettingsCustomSystemProxyScriptPath" xml:space="preserve">
+    <value>Custom system proxy script file path</value>
+  </data>
 </root>

v2rayN/ServiceLib/Resx/ResUI.resx

@@ -1624,4 +1624,10 @@ Do not use the "Fetch Certificate" button when "Allow Insecure" is enabled.</val
   <data name="CertSet" xml:space="preserve">
     <value>Certificate set</value>
   </data>
+  <data name="TbSettingsCustomSystemProxyPacPath" xml:space="preserve">
+    <value>Custom PAC file path</value>
+  </data>
+  <data name="TbSettingsCustomSystemProxyScriptPath" xml:space="preserve">
+    <value>Custom system proxy script file path</value>
+  </data>
 </root>

v2rayN/ServiceLib/Resx/ResUI.ru.resx

@@ -1624,4 +1624,10 @@ Do not use the "Fetch Certificate" button when "Allow Insecure" is enabled.</val
   <data name="CertSet" xml:space="preserve">
     <value>Certificate set</value>
   </data>
+  <data name="TbSettingsCustomSystemProxyPacPath" xml:space="preserve">
+    <value>Custom PAC file path</value>
+  </data>
+  <data name="TbSettingsCustomSystemProxyScriptPath" xml:space="preserve">
+    <value>Custom system proxy script file path</value>
+  </data>
 </root>

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

@@ -1621,4 +1621,10 @@
   <data name="CertSet" xml:space="preserve">
     <value>证书已设置</value>
   </data>
+  <data name="TbSettingsCustomSystemProxyPacPath" xml:space="preserve">
+    <value>自定义 PAC 文件路径</value>
+  </data>
+  <data name="TbSettingsCustomSystemProxyScriptPath" xml:space="preserve">
+    <value>自定义系统代理脚本文件路径</value>
+  </data>
 </root>

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

@@ -1621,4 +1621,10 @@ Do not use the "Fetch Certificate" button when "Allow Insecure" is enabled.</val
   <data name="CertSet" xml:space="preserve">
     <value>Certificate set</value>
   </data>
+  <data name="TbSettingsCustomSystemProxyPacPath" xml:space="preserve">
+    <value>自訂 PAC 檔案路徑</value>
+  </data>
+  <data name="TbSettingsCustomSystemProxyScriptPath" xml:space="preserve">
+    <value>自訂系統代理程式腳本檔案路徑</value>
+  </data>
 </root>

v2rayN/ServiceLib/ViewModels/AddServerViewModel.cs

@@ -146,7 +146,8 @@ public class AddServerViewModel : MyReactiveObject
         {
             domain += $":{SelectedSource.Port}";
         }
-        Cert = await CertPemManager.Instance.GetCertPemAsync(domain, serverName);
+        (Cert, _certError) = await CertPemManager.Instance.GetCertPemAsync(domain, serverName);
+        UpdateCertTip();
     }
 
     private async Task FetchCertChain()
@@ -176,7 +177,8 @@ public class AddServerViewModel : MyReactiveObject
         {
             domain += $":{SelectedSource.Port}";
         }
-        var certs = await CertPemManager.Instance.GetCertChainPemAsync(domain, serverName);
+        (var certs, _certError) = await CertPemManager.Instance.GetCertChainPemAsync(domain, serverName);
+        UpdateCertTip();
         Cert = string.Join("\n", certs);
     }
 }

v2rayN/ServiceLib/ViewModels/MainWindowViewModel.cs

@@ -64,8 +64,6 @@ public class MainWindowViewModel : MyReactiveObject
 
     #endregion Menu
 
-    private bool _hasNextReloadJob = false;
-
     #region Init
 
     public MainWindowViewModel(Func<EViewAction, object?, Task<bool>>? updateView)
@@ -268,7 +266,6 @@ public class MainWindowViewModel : MyReactiveObject
         }
         await RefreshServers();
 
-        BlReloadEnabled = true;
         await Reload();
     }
 
@@ -525,58 +522,74 @@ public class MainWindowViewModel : MyReactiveObject
 
     #region core job
 
+    private bool _hasNextReloadJob = false;
+    private readonly SemaphoreSlim _reloadSemaphore = new(1, 1);
+
     public async Task Reload()
     {
         //If there are unfinished reload job, marked with next job.
-        if (!BlReloadEnabled)
+        if (!await _reloadSemaphore.WaitAsync(0))
         {
             _hasNextReloadJob = true;
             return;
         }
 
-        BlReloadEnabled = false;
-
-        var msgs = await ActionPrecheckManager.Instance.Check(_config.IndexId);
-        if (msgs.Count > 0)
+        try
         {
-            foreach (var msg in msgs)
+            SetReloadEnabled(false);
+
+            var msgs = await ActionPrecheckManager.Instance.Check(_config.IndexId);
+            if (msgs.Count > 0)
             {
-                NoticeManager.Instance.SendMessage(msg);
+                foreach (var msg in msgs)
+                {
+                    NoticeManager.Instance.SendMessage(msg);
+                }
+                NoticeManager.Instance.Enqueue(Utils.List2String(msgs.Take(10).ToList(), true));
+                return;
             }
-            NoticeManager.Instance.Enqueue(Utils.List2String(msgs.Take(10).ToList(), true));
-            BlReloadEnabled = true;
-            return;
+
+            await Task.Run(async () =>
+            {
+                await LoadCore();
+                await SysProxyHandler.UpdateSysProxy(_config, false);
+                await Task.Delay(1000);
+            });
+            AppEvents.TestServerRequested.Publish();
+
+            var showClashUI = _config.IsRunningCore(ECoreType.sing_box);
+            if (showClashUI)
+            {
+                AppEvents.ProxiesReloadRequested.Publish();
+            }
+
+            ReloadResult(showClashUI);
         }
-
-        await Task.Run(async () =>
+        finally
         {
-            await LoadCore();
-            await SysProxyHandler.UpdateSysProxy(_config, false);
-            await Task.Delay(1000);
-        });
-        AppEvents.TestServerRequested.Publish();
-
-        var showClashUI = _config.IsRunningCore(ECoreType.sing_box);
-        if (showClashUI)
-        {
-            AppEvents.ProxiesReloadRequested.Publish();
-        }
-
-        RxApp.MainThreadScheduler.Schedule(() => ReloadResult(showClashUI));
-
-        BlReloadEnabled = true;
-        if (_hasNextReloadJob)
-        {
-            _hasNextReloadJob = false;
-            await Reload();
+            SetReloadEnabled(true);
+            _reloadSemaphore.Release();
+            //If there is a next reload job, execute it.
+            if (_hasNextReloadJob)
+            {
+                _hasNextReloadJob = false;
+                await Reload();
+            }
         }
     }
 
     private void ReloadResult(bool showClashUI)
     {
-        // BlReloadEnabled = true;
-        ShowClashUI = showClashUI;
-        TabMainSelectedIndex = showClashUI ? TabMainSelectedIndex : 0;
+        RxApp.MainThreadScheduler.Schedule(() =>
+        {
+            ShowClashUI = showClashUI;
+            TabMainSelectedIndex = showClashUI ? TabMainSelectedIndex : 0;
+        });
+    }
+
+    private void SetReloadEnabled(bool enabled)
+    {
+        RxApp.MainThreadScheduler.Schedule(() => BlReloadEnabled = enabled);
     }
 
     private async Task LoadCore()

v2rayN/ServiceLib/ViewModels/OptionSettingViewModel.cs

@@ -74,6 +74,8 @@ public class OptionSettingViewModel : MyReactiveObject
     [Reactive] public bool notProxyLocalAddress { get; set; }
     [Reactive] public string systemProxyAdvancedProtocol { get; set; }
     [Reactive] public string systemProxyExceptions { get; set; }
+    [Reactive] public string CustomSystemProxyPacPath { get; set; }
+    [Reactive] public string CustomSystemProxyScriptPath { get; set; }
 
     #endregion System proxy
 
@@ -191,6 +193,8 @@ public class OptionSettingViewModel : MyReactiveObject
         notProxyLocalAddress = _config.SystemProxyItem.NotProxyLocalAddress;
         systemProxyAdvancedProtocol = _config.SystemProxyItem.SystemProxyAdvancedProtocol;
         systemProxyExceptions = _config.SystemProxyItem.SystemProxyExceptions;
+        CustomSystemProxyPacPath = _config.SystemProxyItem.CustomSystemProxyPacPath;
+        CustomSystemProxyScriptPath = _config.SystemProxyItem.CustomSystemProxyScriptPath;
 
         #endregion System proxy
 
@@ -347,6 +351,8 @@ public class OptionSettingViewModel : MyReactiveObject
         _config.SystemProxyItem.SystemProxyExceptions = systemProxyExceptions;
         _config.SystemProxyItem.NotProxyLocalAddress = notProxyLocalAddress;
         _config.SystemProxyItem.SystemProxyAdvancedProtocol = systemProxyAdvancedProtocol;
+        _config.SystemProxyItem.CustomSystemProxyPacPath = CustomSystemProxyPacPath;
+        _config.SystemProxyItem.CustomSystemProxyScriptPath = CustomSystemProxyScriptPath;
 
         //tun mode
         _config.TunModeItem.AutoRoute = TunAutoRoute;

v2rayN/v2rayN.Desktop/Views/OptionSettingWindow.axaml

@@ -674,6 +674,29 @@
 
             <TabItem Name="tabSystemproxy" Header="{x:Static resx:ResUI.TbSettingsSystemproxy}">
                 <DockPanel Margin="{StaticResource Margin8}">
+                    <StackPanel
+                        Name="panSystemProxyUnix"
+                        DockPanel.Dock="Bottom"
+                        Orientation="Vertical">
+                        <StackPanel Orientation="Horizontal">
+                            <TextBlock
+                                Margin="{StaticResource Margin4}"
+                                VerticalAlignment="Center"
+                                Text="{x:Static resx:ResUI.TbSettingsCustomSystemProxyScriptPath}" />
+                            <TextBox
+                                x:Name="txtCustomSystemProxyScriptPath"
+                                Width="600"
+                                Margin="{StaticResource Margin4}"
+                                HorizontalAlignment="Left"
+                                VerticalAlignment="Center"
+                                TextWrapping="Wrap"
+                                Watermark="proxy_set.sh"/>
+                            <Button
+                                x:Name="btnBrowseCustomSystemProxyScriptPath"
+                                Margin="{StaticResource Margin4}"
+                                Content="{x:Static resx:ResUI.TbBrowse}" />
+                        </StackPanel>
+                    </StackPanel>
                     <StackPanel
                         Name="panSystemProxyAdvanced"
                         DockPanel.Dock="Bottom"
@@ -699,6 +722,25 @@
                                 MinWidth="400"
                                 Margin="{StaticResource Margin4}" />
                         </StackPanel>
+
+                        <StackPanel Orientation="Horizontal">
+                            <TextBlock
+                                Margin="{StaticResource Margin4}"
+                                VerticalAlignment="Center"
+                                Text="{x:Static resx:ResUI.TbSettingsCustomSystemProxyPacPath}" />
+                            <TextBox
+                                x:Name="txtCustomSystemProxyPacPath"
+                                Width="600"
+                                Margin="{StaticResource Margin4}"
+                                HorizontalAlignment="Left"
+                                VerticalAlignment="Center"
+                                TextWrapping="Wrap"
+                                Watermark="pac.txt"/>
+                            <Button
+                                x:Name="btnBrowseCustomSystemProxyPacPath"
+                                Margin="{StaticResource Margin4}"
+                                Content="{x:Static resx:ResUI.TbBrowse}" />
+                        </StackPanel>
                     </StackPanel>
 
                     <TextBlock

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

@@ -1,4 +1,5 @@
 using v2rayN.Desktop.Base;
+using v2rayN.Desktop.Common;
 
 namespace v2rayN.Desktop.Views;
 
@@ -17,6 +18,9 @@ public partial class OptionSettingWindow : WindowBase<OptionSettingViewModel>
         ViewModel = new OptionSettingViewModel(UpdateViewHandler);
 
         clbdestOverride.SelectionChanged += ClbdestOverride_SelectionChanged;
+        btnBrowseCustomSystemProxyPacPath.Click += BtnBrowseCustomSystemProxyPacPath_Click;
+        btnBrowseCustomSystemProxyScriptPath.Click += BtnBrowseCustomSystemProxyScriptPath_Click;
+
         clbdestOverride.ItemsSource = Global.destOverrideProtocols;
         _config.Inbound.First().DestOverride?.ForEach(it =>
         {
@@ -101,6 +105,8 @@ public partial class OptionSettingWindow : WindowBase<OptionSettingViewModel>
             this.Bind(ViewModel, vm => vm.notProxyLocalAddress, v => v.tognotProxyLocalAddress.IsChecked).DisposeWith(disposables);
             this.Bind(ViewModel, vm => vm.systemProxyAdvancedProtocol, v => v.cmbsystemProxyAdvancedProtocol.SelectedValue).DisposeWith(disposables);
             this.Bind(ViewModel, vm => vm.systemProxyExceptions, v => v.txtsystemProxyExceptions.Text).DisposeWith(disposables);
+            this.Bind(ViewModel, vm => vm.CustomSystemProxyPacPath, v => v.txtCustomSystemProxyPacPath.Text).DisposeWith(disposables);
+            this.Bind(ViewModel, vm => vm.CustomSystemProxyScriptPath, v => v.txtCustomSystemProxyScriptPath.Text).DisposeWith(disposables);
 
             this.Bind(ViewModel, vm => vm.TunAutoRoute, v => v.togAutoRoute.IsChecked).DisposeWith(disposables);
             this.Bind(ViewModel, vm => vm.TunStrictRoute, v => v.togStrictRoute.IsChecked).DisposeWith(disposables);
@@ -127,6 +133,7 @@ public partial class OptionSettingWindow : WindowBase<OptionSettingViewModel>
             labHide2TrayWhenClose.IsVisible = false;
             togHide2TrayWhenClose.IsVisible = false;
             labHide2TrayWhenCloseTip.IsVisible = false;
+            panSystemProxyUnix.IsVisible = false;
         }
         else if (Utils.IsLinux())
         {
@@ -212,6 +219,28 @@ public partial class OptionSettingWindow : WindowBase<OptionSettingViewModel>
         }
     }
 
+    private async void BtnBrowseCustomSystemProxyPacPath_Click(object? sender, RoutedEventArgs e)
+    {
+        var fileName = await UI.OpenFileDialog(this, null);
+        if (fileName.IsNullOrEmpty())
+        {
+            return;
+        }
+
+        txtCustomSystemProxyPacPath.Text = fileName;
+    }
+
+    private async void BtnBrowseCustomSystemProxyScriptPath_Click(object? sender, RoutedEventArgs e)
+    {
+        var fileName = await UI.OpenFileDialog(this, null);
+        if (fileName.IsNullOrEmpty())
+        {
+            return;
+        }
+
+        txtCustomSystemProxyScriptPath.Text = fileName;
+    }
+
     private void Window_Loaded(object? sender, RoutedEventArgs e)
     {
         btnCancel.Focus();

v2rayN/v2rayN/Views/OptionSettingWindow.xaml

@@ -976,6 +976,28 @@
                                 materialDesign:HintAssist.Hint="Protocol"
                                 Style="{StaticResource DefComboBox}" />
                         </StackPanel>
+
+                        <StackPanel Orientation="Horizontal">
+                            <TextBlock
+                                Margin="{StaticResource Margin8}"
+                                VerticalAlignment="Center"
+                                Style="{StaticResource ToolbarTextBlock}"
+                                Text="{x:Static resx:ResUI.TbSettingsCustomSystemProxyPacPath}" />
+
+                            <TextBox
+                                x:Name="txtCustomSystemProxyPacPath"
+                                Width="600"
+                                Margin="{StaticResource Margin4}"
+                                VerticalAlignment="Center"
+                                AcceptsReturn="True"
+                                Style="{StaticResource DefTextBox}"
+                                TextWrapping="Wrap" />
+                            <Button
+                                x:Name="btnBrowseCustomSystemProxyPacPath"
+                                Margin="{StaticResource MarginLeftRight4}"
+                                Content="{x:Static resx:ResUI.TbBrowse}"
+                                Style="{StaticResource DefButton}" />
+                        </StackPanel>
                     </StackPanel>
 
                     <TextBlock

v2rayN/v2rayN/Views/OptionSettingWindow.xaml.cs

@@ -16,6 +16,8 @@ public partial class OptionSettingWindow
         ViewModel = new OptionSettingViewModel(UpdateViewHandler);
 
         clbdestOverride.SelectionChanged += ClbdestOverride_SelectionChanged;
+        btnBrowseCustomSystemProxyPacPath.Click += BtnBrowseCustomSystemProxyPacPath_Click;
+
         clbdestOverride.ItemsSource = Global.destOverrideProtocols;
         _config.Inbound.First().DestOverride?.ForEach(it =>
         {
@@ -110,6 +112,7 @@ public partial class OptionSettingWindow
             this.Bind(ViewModel, vm => vm.notProxyLocalAddress, v => v.tognotProxyLocalAddress.IsChecked).DisposeWith(disposables);
             this.Bind(ViewModel, vm => vm.systemProxyAdvancedProtocol, v => v.cmbsystemProxyAdvancedProtocol.Text).DisposeWith(disposables);
             this.Bind(ViewModel, vm => vm.systemProxyExceptions, v => v.txtsystemProxyExceptions.Text).DisposeWith(disposables);
+            this.Bind(ViewModel, vm => vm.CustomSystemProxyPacPath, v => v.txtCustomSystemProxyPacPath.Text).DisposeWith(disposables);
 
             this.Bind(ViewModel, vm => vm.TunAutoRoute, v => v.togAutoRoute.IsChecked).DisposeWith(disposables);
             this.Bind(ViewModel, vm => vm.TunStrictRoute, v => v.togStrictRoute.IsChecked).DisposeWith(disposables);
@@ -210,4 +213,15 @@ public partial class OptionSettingWindow
             ViewModel.destOverride = clbdestOverride.SelectedItems.Cast<string>().ToList();
         }
     }
+
+    private void BtnBrowseCustomSystemProxyPacPath_Click(object sender, RoutedEventArgs e)
+    {
+        if (UI.OpenFileDialog(out var fileName,
+              "Txt|*.txt|All|*.*") != true)
+        {
+            return;
+        }
+
+        txtCustomSystemProxyPacPath.Text = fileName;
+    }
 }