origClosesocket = poll.CloseFunc
	origConnect     = connectFunc
	origConnectEx   = poll.ConnectExFunc
	origListen      = listenFunc
	origAccept      = poll.AcceptFunc
)

func installTestHooks() {
	wsaSocketFunc = sw.WSASocket
	poll.CloseFunc = sw.Closesocket
	connectFunc = sw.Connect
	poll.ConnectExFunc = sw.ConnectEx
	listenFunc = sw.Listen
	poll.AcceptFunc = sw.AcceptEx
}

func uninstallTestHooks() {

// AcceptFunc is used to hook the accept call.
var AcceptFunc func(syscall.Handle, syscall.Handle, *byte, uint32, uint32, uint32, *uint32, *syscall.Overlapped) error = syscall.AcceptEx

// ConnectExFunc is used to hook the ConnectEx call.

}

var connectExFunc struct {
	once sync.Once
	addr uintptr
	err  error
}

func LoadConnectEx() error {
	connectExFunc.once.Do(func() {
		var s Handle
		s, connectExFunc.err = Socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)
		if connectExFunc.err != nil {
			return
		}
		defer CloseHandle(s)
		var n uint32
		connectExFunc.err = WSAIoctl(s,

}

var connectExFunc struct {
	once sync.Once
	addr uintptr
	err  error
}

func LoadConnectEx() error {
	connectExFunc.once.Do(func() {
		var s Handle
		s, connectExFunc.err = Socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)
		if connectExFunc.err != nil {
			return
		}
		defer CloseHandle(s)
		var n uint32
		connectExFunc.err = WSAIoctl(s,

// than in the net package so that it can use fd.wop.
func (fd *FD) ConnectEx(ra syscall.Sockaddr) error {
	o := &fd.wop
	o.sa = ra
	_, err := execIO(o, func(o *operation) error {
		return ConnectExFunc(o.fd.Sysfd, o.sa, nil, 0, nil, &o.o)
	})
	return err
}

func (fd *FD) acceptOne(s syscall.Handle, rawsa []syscall.RawSockaddrAny, o *operation) (string, error) {
	// Submit accept request.
	o.handle = s