t.Fatal(err)
	}
	defer syscall.WSACleanup()

	// Test that SupportUnixSocket returns true if WSASocket succeeds with AF_UNIX.
	got := windows.SupportUnixSocket()
	s, err := windows.WSASocket(syscall.AF_UNIX, syscall.SOCK_STREAM, 0, nil, 0, windows.WSA_FLAG_NO_HANDLE_INHERIT)
	if err == nil {
		syscall.Closesocket(s)
	}

// license that can be found in the LICENSE file.

// Fake networking for js/wasm and wasip1/wasm.

//go:build js || wasip1

package syscall

const (
	AF_UNSPEC = iota
	AF_UNIX
	AF_INET
	AF_INET6
)

const (
	SOCK_STREAM = 1 + iota
	SOCK_DGRAM
	SOCK_RAW
	SOCK_SEQPACKET
)

const (
	IPPROTO_IP   = 0
	IPPROTO_IPV4 = 4
	IPPROTO_IPV6 = 0x29
	IPPROTO_TCP  = 6

package socktest

import (
	"fmt"
	"syscall"
)

func familyString(family int) string {
	switch family {
	case syscall.AF_INET:
		return "inet4"
	case syscall.AF_INET6:
		return "inet6"
	case syscall.AF_UNIX:
		return "local"
	default:
		return fmt.Sprintf("%d", family)
	}
}

func typeString(sotype int) string {
	var s string
	switch sotype & 0xff {
	case syscall.SOCK_STREAM:
		s = "stream"

		// never admit this option.
		syscall.SetsockoptInt(s, syscall.IPPROTO_IPV6, syscall.IPV6_V6ONLY, boolint(ipv6only))
	}
	if (sotype == syscall.SOCK_DGRAM || sotype == syscall.SOCK_RAW) && family != syscall.AF_UNIX {
		// Allow broadcast.
		return os.NewSyscallError("setsockopt", syscall.SetsockoptInt(s, syscall.SOL_SOCKET, syscall.SO_BROADCAST, 1))
	}
	return nil
}

func setDefaultListenerSockopts(s int) error {

		// never admit this option.
		syscall.SetsockoptInt(s, syscall.IPPROTO_IPV6, syscall.IPV6_V6ONLY, boolint(ipv6only))
	}
	if (sotype == syscall.SOCK_DGRAM || sotype == syscall.SOCK_RAW) && family != syscall.AF_UNIX {
		// Allow broadcast.
		return os.NewSyscallError("setsockopt", syscall.SetsockoptInt(s, syscall.SOL_SOCKET, syscall.SO_BROADCAST, 1))
	}
	return nil
}

func setDefaultListenerSockopts(s int) error {

limitations under the License.
*/

package filesystem

import (
	"fmt"
	"os"
	"path/filepath"
)

// IsUnixDomainSocket returns whether a given file is a AF_UNIX socket file
func IsUnixDomainSocket(filePath string) (bool, error) {
	fi, err := os.Stat(filePath)
	if err != nil {
		return false, fmt.Errorf("stat file %s failed: %v", filePath, err)
	}

		switch fd.sotype {
		case syscall.SOCK_STREAM:
			return sockaddrToTCP
		case syscall.SOCK_DGRAM:
			return sockaddrToUDP
		case syscall.SOCK_RAW:
			return sockaddrToIP
		}
	case syscall.AF_UNIX:
		switch fd.sotype {
		case syscall.SOCK_STREAM:
			return sockaddrToUnix
		case syscall.SOCK_DGRAM:
			return sockaddrToUnixgram
		case syscall.SOCK_SEQPACKET:
			return sockaddrToUnixpacket
		}
	}

		// never admit this option.
		syscall.SetsockoptInt(s, syscall.IPPROTO_IPV6, syscall.IPV6_V6ONLY, boolint(ipv6only))
	}
	if (sotype == syscall.SOCK_DGRAM || sotype == syscall.SOCK_RAW) && family != syscall.AF_UNIX {
		// Allow broadcast.
		return os.NewSyscallError("setsockopt", syscall.SetsockoptInt(s, syscall.SOL_SOCKET, syscall.SO_BROADCAST, 1))
	}
	return nil
}

func setDefaultListenerSockopts(s int) error {

		// never admit this option.
		syscall.SetsockoptInt(s, syscall.IPPROTO_IPV6, syscall.IPV6_V6ONLY, boolint(ipv6only))
	}
	if (sotype == syscall.SOCK_DGRAM || sotype == syscall.SOCK_RAW) && family != syscall.AF_UNIX && family != syscall.AF_INET6 {
		// Allow broadcast.
		return os.NewSyscallError("setsockopt", syscall.SetsockoptInt(s, syscall.SOL_SOCKET, syscall.SO_BROADCAST, 1))
	}
	return nil
}

		// never admit this option.
		syscall.SetsockoptInt(s, syscall.IPPROTO_IPV6, syscall.IPV6_V6ONLY, boolint(ipv6only))
	}
	if (sotype == syscall.SOCK_DGRAM || sotype == syscall.SOCK_RAW) && family != syscall.AF_UNIX {
		// Allow broadcast.
		return os.NewSyscallError("setsockopt", syscall.SetsockoptInt(s, syscall.SOL_SOCKET, syscall.SO_BROADCAST, 1))
	}
	return nil
}

func setDefaultListenerSockopts(s int) error {