conn

type RelayConn interface {
	// Transport transports data between the client and the remote server.
	// The remoteLabel is the label of the remote server.
	Transport(remoteLabel string) error

	// GetRelayLabel returns the label of the Relay instance.
	GetRelayLabel() string

	GetStats() *Stats

	Close() error
}

type RelayConnOption func(*relayConnImpl)

type Stats struct {
	Up               int64
	Down             int64
	HandShakeLatency time.Duration
}