// The connection will remain in this stat until the connection has been successfully re-established.
	StateConnectionError

	// StateShutdown is the state when the server has been shut down.
	// This will not be used under normal operation.
	StateShutdown

	// MaxDeadline is the maximum deadline allowed,
	// Approx 49 days.
	MaxDeadline = time.Duration(math.MaxUint32) * time.Millisecond
)

	// records, which are used to overcome USTAR's shortcomings, in addition to
	// providing the ability to have sub-second resolution for timestamps.
	//
	// Some newer formats add their own extensions to PAX by defining their
	// own keys and assigning certain semantic meaning to the associated values.
	// For example, sparse file support in PAX is implemented using keys
	// defined by the GNU manual (e.g., "GNU.sparse.map").
	//

	go func() {
		for {
			client.doListen(ctx, listenCh, v)
			select {
			case <-ctx.Done():
				return
			default:
				// There was error in the REST request, retry after sometime as probably the peer is down.
				time.Sleep(5 * time.Second)
			}
		}
	}()
}

// Trace - send http trace request to peer nodes

// When clients request content hosted on a particular source domain and that content make requests
// directed towards a domain other than its own, the remote domain needs to host a cross-domain
// policy file that grants access to the source domain, allowing the client to continue the transaction.
func setCrossDomainPolicyMiddleware(h http.Handler) http.Handler {

func (initialSnapShot LeakDetect) DetectLeak(t TestErrHandler) {
	if t.Failed() {
		return
	}
	// Loop, waiting for goroutines to shut down.
	// Wait up to 5 seconds, but finish as quickly as possible.
	deadline := UTCNow().Add(leakDetectDeadline * time.Second)
	for {
		// get sack snapshot of relevant go routines.

// Config represents the heal settings.
type Config struct {
	// Bitrot will perform bitrot scan on local disk when checking objects.
	Bitrot string `json:"bitrotscan"`

	// maximum sleep duration between objects to slow down heal operation.
	Sleep   time.Duration `json:"sleep"`
	IOCount int           `json:"iocount"`

	DriveWorkers int `json:"drive_workers"`

	// Cached value from Bitrot field
	cache struct {

	bufferPool   sync.Pool        // pool of []byte objects for input
	csvDstPool   sync.Pool        // pool of [][]string used for output
	close        chan struct{}    // used for shutting down the splitter before end of stream
	readerWg     sync.WaitGroup   // used to keep track of async reader.
}

// queueItem is an item in the queue.
type queueItem struct {

}

func (ies *IAMEtcdStore) watch(ctx context.Context, keyPath string) <-chan iamWatchEvent {
	ch := make(chan iamWatchEvent)

	// go routine to read events from the etcd watch channel and send them
	// down `ch`
	go func() {
		for {
		outerLoop:
			watchCh := ies.client.Watch(ctx,
				keyPath, etcd.WithPrefix(), etcd.WithKeysOnly())

			for {
				select {
				case <-ctx.Done():
					return

					}
				}
				return true
			}
		}
		// We cannot generate a token with what we are holding.
		// If we've already hit EOF or an I/O error, we are done.
		if s.err != nil {
			// Shut it down.
			s.start = 0
			s.end = 0
			return false
		}
		// Must read more data.
		// First, shift data to beginning of buffer if there's lots of empty space
		// or space is needed.

	tierFVID     = "tier-free-versionID"
	tierFVMarker = "tier-free-marker"
	tierSkipFVID = "tier-skip-fvid"
)

// SetTierFreeVersionID sets free-version's versionID. This method is used by
// object layer to pass down a versionID to set for a free-version that may be
// created.
func (fi *FileInfo) SetTierFreeVersionID(versionID string) {
	if fi.Metadata == nil {
		fi.Metadata = make(map[string]string)
	}