Unsubscribe.cpp

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/*
 * SNode.C - A Slim Toolkit for Network Communication
 * Copyright (C) Volker Christian <me@vchrist.at>
 *               2020, 2021, 2022, 2023, 2024, 2025
 *
 * This program is free software: you can redistribute it and/or modify
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 * This program is distributed in the hope that it will be useful,
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/*
 * MIT License
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#include "iot/mqtt/server/packets/Unsubscribe.h"
 
#include "iot/mqtt/server/Mqtt.h"
 
#ifndef DOXYGEN_SHOULD_SKIP_THIS
 
#include <list>
#include <string>
 
#endif // DOXYGEN_SHOULD_SKIP_THIS
 
namespace iot::mqtt::server::packets {
 
    Unsubscribe::Unsubscribe(uint32_t remainingLength, uint8_t flags)
        : iot::mqtt::server::ControlPacketDeserializer(remainingLength, flags, MQTT_UNSUBSCRIBE_FLAGS) {
        this->flags = flags;
    }
 
    std::size_t Unsubscribe::deserializeVP(iot::mqtt::MqttContext* mqttContext) {
        std::size_t consumed = 0;
 
        switch (state) {
            case 0: // V-Header
                consumed += packetIdentifier.deserialize(mqttContext);
                if (!packetIdentifier.isComplete()) {
                    break;
                }
 
                state++;
                [[fallthrough]];
            case 1: // Payload
                consumed += topic.deserialize(mqttContext);
 
                if (!topic.isComplete()) {
                    break;
                }
 
                topics.push_back(topic);
                topic.reset();
 
                complete = getConsumed() + consumed >= this->getRemainingLength();
 
                break;
        }
 
        return consumed;
    }
 
    void Unsubscribe::deliverPacket(iot::mqtt::server::Mqtt* mqtt) {
        mqtt->printVP(*this);
        mqtt->_onUnsubscribe(*this);
    }
 
} // namespace iot::mqtt::server::packets