From 34720da3d0a4a98383639cbedcbe1aa885217ed6 Mon Sep 17 00:00:00 2001
From: LemonBoy <thatlemon@gmail.com>
Date: Sun, 22 Nov 2020 10:29:45 +0100
Subject: [PATCH] Apparently unix sockets are supported on Windows

Starting from Windows 10 build 17063.
---
 lib/std/net.zig      | 6 +++++-
 lib/std/net/test.zig | 9 +++++++++
 2 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/lib/std/net.zig b/lib/std/net.zig
index 41da4a2c46..6fe2d1cd08 100644
--- a/lib/std/net.zig
+++ b/lib/std/net.zig
@@ -12,7 +12,11 @@ const os = std.os;
 const fs = std.fs;
 const io = std.io;
 
-pub const has_unix_sockets = @hasDecl(os, "sockaddr_un");
+// Windows 10 added support for unix sockets in build 17063, redstone 4 is the
+// first release to support them.
+pub const has_unix_sockets = @hasDecl(os, "sockaddr_un") and
+    (builtin.os.tag != .windows or
+    std.Target.current.os.version_range.windows.isAtLeast(.win10_rs4) orelse false);
 
 pub const Address = extern union {
     any: os.sockaddr,
diff --git a/lib/std/net/test.zig b/lib/std/net/test.zig
index 12eb7c6cb2..10a9c4e18b 100644
--- a/lib/std/net/test.zig
+++ b/lib/std/net/test.zig
@@ -258,6 +258,15 @@ test "listen on a unix socket, send bytes, receive bytes" {
     if (builtin.single_threaded) return error.SkipZigTest;
     if (!net.has_unix_sockets) return error.SkipZigTest;
 
+    if (std.builtin.os.tag == .windows) {
+        _ = try std.os.windows.WSAStartup(2, 2);
+    }
+    defer {
+        if (std.builtin.os.tag == .windows) {
+            std.os.windows.WSACleanup() catch unreachable;
+        }
+    }
+
     var server = net.StreamServer.init(.{});
     defer server.deinit();