tlsConfig          *tls.Config
	blockConnect       chan struct{}

	incomingBytes func(n int64) // Record incoming bytes.
	outgoingBytes func(n int64) // Record outgoing bytes.
	trace         *tracer       // tracer for this connection.
	baseFlags     Flags

	// For testing only
	debugInConn  net.Conn
	debugOutConn net.Conn
	addDeadline  time.Duration
	connMu       sync.Mutex
}

)

// dump the request into a string in JSON format.
func dumpRequest(r *http.Request) string {
	header := r.Header.Clone()
	header.Set("Host", r.Host)
	// Replace all '%' to '%%' so that printer format parser
	// to ignore URL encoded values.
	rawURI := strings.ReplaceAll(r.RequestURI, "%", "%%")
	req := struct {
		Method     string      `json:"method"`
		RequestURI string      `json:"reqURI"`

//
// The leaves are "compacted" based on a number of properties.
// A compacted leaf contains the totals of all files beneath it.
//
// A leaf is only scanned once every dataUsageUpdateDirCycles,
// rarer if the bloom filter for the path is clean and no lifecycles are applied.
// Skipped leaves have their totals transferred from the previous cycle.
//