/**
     * This stream class is unbuffered. Therefore this method will always
     * return 0 for streams connected to regular files. However, a
     * stream created from a Named Pipe this method will query the server using a
     * "peek named pipe" operation and return the number of available bytes
     * on the server.
     */
    @Override
    public int available () throws IOException {

     * @throws CIFSException
     */
    SmbResource get ( String url ) throws CIFSException;


    /**
     * Get a pipe resource
     * 
     * @param url
     * @param pipeType
     *            the type of the pipe
     * @return the SMB pipe resource at the specified location
     * @throws CIFSException
     */
    SmbPipeResource getPipe ( String url, int pipeType ) throws CIFSException;

				}},
			},
			expect: true,
		},
		{
			desc: "listener-pipe",
			inFilter: &ListenerFilter{
				Address: "",
				Port:    0,
				Type:    "",
			},
			inListener: &listener.Listener{
				Address: &core.Address{
					Address: &core.Address_Pipe{
						Pipe: &core.Pipe{Path: "unix:///dev/shm/uds.socket"},
					},
				},
			},
			expect: true,
		},
	}

	// populated (even if the body itself is still being
	// written to the res.Body, a pipe)
	rw, resc := newPopulateResponseWriter()
	go func() {
		t.fh.ServeHTTP(rw, req)
		rw.finish()
	}()
	return <-resc, nil
}

func newPopulateResponseWriter() (*populateResponse, <-chan *Response) {
	pr, pw := io.Pipe()
	rw := &populateResponse{
		ch: make(chan *Response),
		pw: pw,
		res: &Response{

		for i := range b {
			b[i] = letter[rand.Intn(len(letter))]
		}
		return "\\\\.\\pipe\\test-pipe" + string(b)
	}
	testFile := generatePipeName(4)
	pipeln, err := winio.ListenPipe(testFile, &winio.PipeConfig{SecurityDescriptor: "D:P(A;;GA;;;BA)(A;;GA;;;SY)"})
	defer pipeln.Close()

	require.NoErrorf(t, err, "Failed to listen on named pipe for test purposes: %v", err)
	result, err := IsUnixDomainSocket(testFile)

	// so that pass 2 won't stomp on an fd it needs later.
	if pipe < nextfd {
		_, _, err1 = RawSyscall(SYS_DUP3, uintptr(pipe), uintptr(nextfd), O_CLOEXEC)
		if err1 != 0 {
			goto childerror
		}
		pipe = nextfd
		nextfd++
	}
	for i = 0; i < len(fd); i++ {
		if fd[i] >= 0 && fd[i] < i {
			if nextfd == pipe { // don't stomp on pipe
				nextfd++
			}

	{27, "EFBIG", "file too large"},
	{28, "ENOSPC", "no space left on device"},
	{29, "ESPIPE", "illegal seek"},
	{30, "EROFS", "read-only file system"},
	{31, "EMLINK", "too many links"},
	{32, "EPIPE", "broken pipe"},
	{33, "EDOM", "numerical argument out of domain"},
	{34, "ERANGE", "numerical result out of range"},
	{35, "ENOMSG", "no message of desired type"},
	{36, "EIDRM", "identifier removed"},

	err = r.PipeReader.CloseWithError(err)
	r.wait()
	return err
}

// WaitPipe implements wait-group backend io.Pipe to provide
// synchronization between read() end with write() end.
func WaitPipe() (*PipeReader, *PipeWriter) {
	r, w := io.Pipe()
	var wg sync.WaitGroup
	wg.Add(1)
	return &PipeReader{
			PipeReader: r,
			wait:       wg.Wait,
		}, &PipeWriter{
			PipeWriter: w,

	s.it.Iterate(fn)
}

func FromIterator[T any](it Iterator[T]) Stream[T] {
	return Stream[T]{it: it}
}

func (s Stream[T]) DropWhile(fn func(T) bool) Stream[T] {
	return Pipe[T, T](s, func(t T) (T, bool) {
		return t, true
	})
}

func Pipe[T, R any](s Stream[T], op func(d T) (R, bool)) Stream[R] {
	it := func(fn func(R) bool) {
		// XXX Not getting the closure right when converting to interface.

	{27, "EFBIG", "file too large"},
	{28, "ENOSPC", "no space left on device"},
	{29, "ESPIPE", "illegal seek"},
	{30, "EROFS", "read-only file system"},
	{31, "EMLINK", "too many links"},
	{32, "EPIPE", "broken pipe"},
	{33, "EDOM", "numerical argument out of domain"},
	{34, "ERANGE", "numerical result out of range"},
	{35, "EDEADLK", "resource deadlock avoided"},
	{36, "ENAMETOOLONG", "file name too long"},