TeaSpeakLibrary/src/protocol/AcknowledgeManager.h

#pragma once

#include <memory>
#include <protocol/Packet.h>

#define DEBUG_ACKNOWLEDGE
namespace ts {
    namespace connection {
        class VoiceClientConnection;
        class AcknowledgeManager {
            struct Entry {
                uint16_t packet_id = 0;
                uint8_t packet_type = 0xFF;
                uint8_t resend_count = 0;
                bool acknowledged : 1;
                uint8_t send_count : 7;


                pipes::buffer buffer;
                std::chrono::system_clock::time_point first_send;
                std::chrono::system_clock::time_point next_resend;
                std::chrono::milliseconds resend_period;

                std::unique_ptr<threads::Future<bool>> acknowledge_listener;
            };
            public:
                AcknowledgeManager();
                virtual ~AcknowledgeManager();

                size_t awaiting_acknowledge();
                void reset();

                void process_packet(ts::protocol::BasicPacket& /* packet */);
                bool process_acknowledge(uint8_t packet_type, const pipes::buffer_view& /* payload */, std::string& /* error */);

                ssize_t execute_resend(
                        const std::chrono::system_clock::time_point& /* now */,
                        std::chrono::system_clock::time_point& /* next resend */,
                        std::deque<pipes::buffer>& /* buffers to resend */,
                        std::string& /* error */
                );
            private:
                std::recursive_mutex entry_lock;
                std::deque<std::shared_ptr<Entry>> entries;

                std::chrono::milliseconds resend_delay{500};

                double average_response = 20;
        };
    }
}