if r != nil {
		readMsgpReaderPool.Put(r)
	}
}

func (client *storageRESTClient) ReadVersion(ctx context.Context, origvolume, volume, path, versionID string, opts ReadOptions) (fi FileInfo, err error) {
	// Use websocket when not reading data.
	if !opts.ReadData {
		resp, err := storageReadVersionRPC.Call(ctx, client.gridConn, grid.NewMSSWith(map[string]string{
			storageRESTDiskID:     *client.diskID.Load(),

func (l EndpointServerPools) NEndpoints() (count int) {
	for _, ep := range l {
		count += len(ep.Endpoints)
	}
	return count
}

// GridHosts will return all peers, including local.
// in websocket grid compatible format, The local peer
// is returned as a separate string.
func (l EndpointServerPools) GridHosts() (gridHosts []string, gridLocal string) {
	seenHosts := set.NewStringSet()
	for _, ep := range l {

		mid, ok := c.outgoing.Load(muxID)
		if !ok || mid == nil {
			resp(true)
			return
		}
		mid.respMu.Lock()
		resp(mid.closed)
		mid.respMu.Unlock()
	}
}

// wsWriter writes websocket messages.
type wsWriter struct {
	tmp [ws.MaxHeaderSize]byte
}

// writeMessage writes a message to w without allocations.