Method IsInitialized

library/cpp/netliba/v6/net_acks.h:507–509

        }
        void Resend();
        bool IsInitialized() {
            return PacketCount != 0;
        }
        int GetPacketToSend(float deltaT);
        void AddToResend(int pkt); // called when failed to send packet
        void Ack(int pkt, float deltaT, bool updateRTT);