host/frontend/gcastv2/webrtc/include/webrtc/SCTPHandler.h

#pragma once

#include <webrtc/DTLS.h>

#include <https/RunLoop.h>

#include <memory>

struct SCTPHandler : public std::enable_shared_from_this<SCTPHandler> {
    explicit SCTPHandler(
            std::shared_ptr<RunLoop> runLoop,
            std::shared_ptr<DTLS> dtls);

    void run();

    int inject(uint8_t *data, size_t size);

private:
    std::shared_ptr<RunLoop> mRunLoop;
    std::shared_ptr<DTLS> mDTLS;

    uint32_t mInitiateTag;
    uint32_t mSendingTSN;
    bool mSentGreeting;

    int processChunk(
            uint16_t srcPort,
            const uint8_t *data,
            size_t size,
            bool firstChunk,
            bool lastChunk);

    static uint32_t crc32c(const uint8_t *data, size_t size);

    void onSendGreeting(uint16_t srcPort, size_t index);
};