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

OP is aware this needs to happen in libuv first, see libuv/libuv#2537 (comment) and note the unsubstantiated performance claim.

About performance I'll leave some extra into there.

This issue has been marked as stale due to 210 days of inactivity.
It will be automatically closed in 30 days if no further activity occurs. If this is still relevant, please leave a comment or update it to keep it open.

This issue is still relevant today. Since VSCode extensions are running on nodejs, implementing Language Server connectivity through domain sockets is currently blocked. This aspect is active part of the considerations around godotengine/godot-proposals#13490

You could try push on merging libuv/libuv#4636 :)

This issue has been marked as stale due to 90 days of inactivity.
It will be automatically closed in 30 days if no further activity occurs. If this is still relevant, please leave a comment or update it to keep it open.

This issue is still relevant today. Since VSCode extensions are running on nodejs, implementing Language Server connectivity through domain sockets is currently blocked. This aspect is active part of the considerations around godotengine/godot-proposals#13490

fix(sea): drop windows from the release matrix, a real platform incom…

feat(windows): support native Windows via a per-pid named pipe

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Unix Domain Socket doesn't support on Windows #55979

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Platform

Subsystem

What steps will reproduce the bug?

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

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

What do you see instead?

Additional information

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Unix Domain Socket doesn't support on Windows #55979

Description

Version

Platform

Subsystem

What steps will reproduce the bug?

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

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

What do you see instead?

Additional information

Activity

bnoordhuis commented on Nov 24, 2024

reitowo commented on Nov 25, 2024

github-actions commented on Apr 26, 2026

HolonProduction commented on Apr 27, 2026

reitowo commented on Apr 27, 2026

github-actions commented on Jul 28, 2026

HolonProduction commented on Jul 28, 2026

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