Unix Domain Socket doesn't support on Windows

Version

20.18.0

Platform

Microsoft Windows NT 10.0.26100.0 x64

Subsystem

No response

What steps will reproduce the bug?

Currently, Windows (at least .NET) supports connect to UnixDomainSocket, or listen to UnixDomainSocket in ASP.NET Core. But node's net module seems not support connect to a Windows local file.

public class UnixDomainSocketsConnectionFactory(EndPoint endPoint) {
   public async ValueTask<Stream> ConnectAsync(SocketsHttpConnectionContext _,
      CancellationToken cancellationToken = default) {
      var socket = new Socket(AddressFamily.Unix, SocketType.Stream, ProtocolType.Unspecified);

      try {
         await socket.ConnectAsync(endPoint, cancellationToken).ConfigureAwait(false);
         return new NetworkStream(socket, true);
      } catch {
         socket.Dispose();
         throw;
      }
   }

   public static GrpcChannel CreateChannel(string socketPath) {
      var udsEndPoint = new UnixDomainSocketEndPoint(socketPath);
      var connectionFactory = new UnixDomainSocketsConnectionFactory(udsEndPoint);
      var socketsHttpHandler = new SocketsHttpHandler {
         ConnectCallback = connectionFactory.ConnectAsync
      };

      return GrpcChannel.ForAddress("http://localhost", new GrpcChannelOptions {
         HttpHandler = socketsHttpHandler
      });
   }
}

   protected void Initialize(string token) {
      var builder = WebApplication.CreateBuilder();
      builder.WebHost.ConfigureKestrel(serverOptions => {
         if (!Directory.Exists(MetaBoxStatic.UnixSocketPath)) {
            Directory.CreateDirectory(MetaBoxStatic.UnixSocketPath);
         }

         var socketPath = Path.Combine(MetaBoxStatic.UnixSocketPath, $"MetaBox-{token}.tmp");
         serverOptions.ListenUnixSocket(socketPath);
         serverOptions.ConfigureEndpointDefaults(listenOptions => { listenOptions.Protocols = HttpProtocols.Http2; });
      });

      ConfigureBuilder(builder);
      builder.Services.PostConfigureAll<HostOptions>(opts => opts.ShutdownTimeout = TimeSpan.FromSeconds(1));

      WebApp = builder.Build();
      ConfigureApp(WebApp);
   }

How often does it reproduce? Is there a required condition?

Always

What is the expected behavior? Why is that the expected behavior?

The net connects to the "Windows" UnixDomainSocket as it could.

What do you see instead?

EACCESS / ENOENT

Additional information

No response

まず、Node.js の net モジュールによる Windows 上の Unix ドメインソケットの処理を確認し、提供されている Windows と .NET の例を使って失敗を再現します。Node が Windows UnixDomainSocket に接続してリッスンでき、報告されている EACCESS と ENOENT のエラーが解消されれば完了です。利用可能であれば、関連するプラットフォーム固有のテストを追加または実行してください。