// SPDX-FileCopyrightText: 2026 Echolot contributors
// SPDX-License-Identifier: GPL-3.0-or-later

//go:build windows

package selftest

import (
	"errors"
	"syscall"
)

// Winsock reports a taken port as WSAEADDRINUSE (10048), which syscall.EADDRINUSE does not match
// on Windows — and the stdlib syscall package does not export the WSA constant. The server
// deploys on Linux; this exists so the tests tell the truth on a Windows development machine too.
const wsaeaddrinuse = syscall.Errno(10048)

func isAddrInUse(err error) bool {
	return errors.Is(err, wsaeaddrinuse) || errors.Is(err, syscall.EADDRINUSE)
}