for {
		select {
		case entry, ok := <-diffCh:
			if !ok {
				return
			}
			if err := enc.Encode(entry); err != nil {
				return
			}
			if len(diffCh) == 0 {
				// Flush if nothing is queued
				w.(http.Flusher).Flush()
			}
		case <-keepAliveTicker.C:
			if len(diffCh) > 0 {
				continue
			}
			if _, err := w.Write([]byte(" ")); err != nil {
				return
			}

	if dir == "" {
		dir = getDefaultDir()
	}

	if dir == "" {
		if !dirSet {
			return nil, fmt.Errorf("missing option must be provided")
		}
		return nil, fmt.Errorf("provided option cannot be empty")
	}

	// Disallow relative paths, figure out absolute paths.
	dirAbs, err := filepath.Abs(dir)
	if err != nil {
		return nil, err
	}
	err = mkdirAllIgnorePerm(dirAbs)
	if err != nil {

				if err != nil {
					return err
				}

				// Check if the current bucket has a configured lifecycle policy
				lc, err = globalLifecycleSys.Get(bi.Name)
				if err != nil && !errors.Is(err, BucketLifecycleNotFound{Bucket: bi.Name}) {
					return err
				}

				// Check if bucket is object locked.
				lr, err = globalBucketObjectLockSys.Get(bi.Name)
				if err != nil {
					return err
				}

		if _, err := browser.LookupConfig(s[config.BrowserSubSys][config.Default]); err != nil {
			return err
		}
	default:
		if config.LoggerSubSystems.Contains(subSys) {
			if err := logger.ValidateSubSysConfig(ctx, s, subSys); err != nil {
				return err
			}
		}
	}

	if config.NotifySubSystems.Contains(subSys) {
		if err := notify.TestSubSysNotificationTargets(ctx, s, subSys, NewHTTPTransport()); err != nil {

// successfully the version only if the backend is Erasure.
func formatGetBackendErasureVersion(b []byte) (string, error) {
	meta := &formatMetaV1{}
	if err := json.Unmarshal(b, meta); err != nil {
		return "", err
	}
	if meta.Version != formatMetaVersionV1 {
		return "", fmt.Errorf(`format.Version expected: %s, got: %s`, formatMetaVersionV1, meta.Version)
	}

	// only meant if you want to further optimize drive distribution.
	if setDriveCount > 0 {
		msg := fmt.Sprintf("Invalid set drive count. Acceptable values for %d number drives are %d", commonSize, setCounts)
		var found bool
		for _, ss := range setCounts {
			if ss == setDriveCount {
				found = true
			}
		}
		if !found {
			return nil, config.ErrInvalidErasureSetSize(nil).Msg(msg)

		errFatal(resp.Err)
		if resp.Msg[0] != byte(got) {
			t.Error("expected response", got, "got", resp.Msg[0])
		}
		got++
	}
	if got != 100 {
		t.Error("expected 100 responses, got", got)
	}
}

func testServerInCongestion(t *testing.T, local, remote *Manager) {
	defer testlogger.T.SetErrorTB(t)()
	errFatal := func(err error) {
		t.Helper()
		if err != nil {
			t.Fatal(err)
		}
	}

	log.Debug("pod netns was not found, trying to find it using procfs")
	// this can happen if the pod was dynamically added to the mesh after it was created.
	// in that case, try finding the netns using procfs.
	if err := s.rescanPod(pod); err != nil {
		log.Errorf("error scanning proc: error was %s", err)
		return nil, err
	}
	// try again. we can still get here if the pod is in the process of being created.

			if globalIAMSys.LDAPConfig.Enabled() {
				sa, _, err := globalIAMSys.getServiceAccount(context.Background(), c.User())
				if err != nil && !errors.Is(err, errNoSuchServiceAccount) {
					return nil, err
				}
				if errors.Is(err, errNoSuchServiceAccount) {
					targetUser, targetGroups, err := globalIAMSys.LDAPConfig.Bind(c.User(), string(pass))
					if err != nil {
						return nil, err
					}

		}

	}
	// Compact if too many children...
	if !into.Compacted {
		f.newCache.reduceChildrenOf(thisHash, dataScannerCompactAtChildren, f.newCache.Info.Name != folder.name)
	}
	if _, ok := f.updateCache.Cache[thisHash.Key()]; !wasCompacted && ok {
		// Replace if existed before.
		if flat := f.newCache.sizeRecursive(thisHash.Key()); flat != nil {
			f.updateCache.deleteRecursive(thisHash)