// has been used.
// The returned reader contains the payload.
func waitForHTTPResponse(respBody io.Reader) (io.Reader, error) {
	reader := bufio.NewReader(respBody)
	for {
		b, err := reader.ReadByte()
		if err != nil {
			return nil, err
		}
		// Check if we have a response ready or a filler byte.
		switch b {
		case 0:
			return reader, nil
		case 1:
			errorText, err := io.ReadAll(reader)

	if total < limit {
		return
	}

	// Appears to be printed with _MINIO_SERVER_DEBUG=off
	// console.Debugf(" %d children found, compacting %v\n", total, path)

	leaves := make([]struct {
		objects uint64
		path    dataUsageHash
	}, total)
	// Collect current leaves that have children.
	leaves = leaves[:0]
	remove := total - limit
	var add func(path dataUsageHash)
	add = func(path dataUsageHash) {

// Maximum 4KiB size per object lock config.
const maxObjectLockConfigSize = 1 << 12

// ParseObjectLockConfig parses ObjectLockConfig from xml
func ParseObjectLockConfig(reader io.Reader) (*Config, error) {
	config := Config{}
	if err := xml.NewDecoder(io.LimitReader(reader, maxObjectLockConfigSize)).Decode(&config); err != nil {
		return nil, err
	}

	return &config, nil
}

	var header http.Header
	if etag != "" {
		header.Set("ETag", etag)
	}
	Range := &HTTPRangeSpec{Start: startOffset, End: startOffset + length}

	reader, err := api.GetObjectNInfo(ctx, bucket, object, Range, header, opts)
	if err != nil {
		return err
	}
	defer reader.Close()

	_, err = xioutil.Copy(writer, reader)
	return err

			for _, server := range infoMessage.Servers {
				anonEndpoint := anonAddr(server.Endpoint)
				servers = append(servers, madmin.ServerInfo{
					State:    server.State,
					Endpoint: anonEndpoint,
					Uptime:   server.Uptime,
					Version:  server.Version,
					CommitID: server.CommitID,
					Network:  anonymizeNetwork(server.Network),
					Drives:   anonymizeDrives(server.Disks),

			minio.PutObjectOptions{DisableContentSha256: true},
		)
		return err
	}

	return NotImplemented{}
}

type listerAt []os.FileInfo

// Modeled after strings.Reader's ReadAt() implementation
func (f listerAt) ListAt(ls []os.FileInfo, offset int64) (int, error) {
	var n int
	if offset >= int64(len(f)) {
		return 0, io.EOF
	}
	n = copy(ls, f[offset:])
	if n < len(ls) {

		}
	}

	if c.newAuthToken != nil {
		req.Header.Set("Authorization", "Bearer "+c.newAuthToken(u.RawQuery))
	}
	req.Header.Set("X-Minio-Time", time.Now().UTC().Format(time.RFC3339))

	if tc, ok := ctx.Value(mcontext.ContextTraceKey).(*mcontext.TraceCtxt); ok {
		req.Header.Set(xhttp.AmzRequestID, tc.AmzReqID)
	}

	return req, nil
}

type respBodyMonitor struct {

type Writer struct {
	cw          *countWriter
	dir         []*header
	last        *fileWriter
	closed      bool
	compressors map[uint16]Compressor
	comment     string

	// testHookCloseSizeOffset if non-nil is called with the size
	// of offset of the central directory at Close.
	testHookCloseSizeOffset func(size, offset uint64)
}

type header struct {
	*FileHeader
	offset uint64
	raw    bool
}

func doesPolicySignatureV4Match(formValues http.Header) (auth.Credentials, APIErrorCode) {
	// Server region.
	region := globalSite.Region

	// Parse credential tag.
	credHeader, s3Err := parseCredentialHeader("Credential="+formValues.Get(xhttp.AmzCredential), region, serviceS3)
	if s3Err != ErrNone {
		return auth.Credentials{}, s3Err
	}

	r := &http.Request{Header: formValues}

	stsRouter.Methods(http.MethodPost).MatcherFunc(func(r *http.Request, rm *mux.RouteMatch) bool {
		ctypeOk := wildcard.MatchSimple("application/x-www-form-urlencoded*", r.Header.Get(xhttp.ContentType))
		authOk := wildcard.MatchSimple(signV4Algorithm+"*", r.Header.Get(xhttp.Authorization))
		noQueries := len(r.URL.RawQuery) == 0
		return ctypeOk && authOk && noQueries
	}).HandlerFunc(httpTraceAll(sts.AssumeRole))