Connect.h

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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
 * it under the terms of the GNU Lesser General Public License as published
 * by the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */
 
#ifndef IOT_MQTTFAST_PACKETS_CONNECT_H
#define IOT_MQTTFAST_PACKETS_CONNECT_H
 
#include "iot/mqtt-fast/ControlPacket.h"
 
namespace iot::mqtt_fast {
    class ControlPacketFactory;
}
 
#ifndef DOXYGEN_SHOULD_SKIP_THIS
 
#include <cstdint>
#include <string>
 
#endif // DOXYGEN_SHOULD_SKIP_THIS
 
#define MQTT_CONNECT 0x01
 
#define MQTT_VERSION_3_1_1 0x04
 
namespace iot::mqtt_fast::packets {
 
    class Connect : public iot::mqtt_fast::ControlPacket {
    public:
        explicit Connect(const std::string& clientId,
                         const std::string& protocol = "MQTT",
                         uint8_t version = 4,
                         uint8_t flags = 0,
                         uint16_t keepAlive = 0x003C);
        explicit Connect(iot::mqtt_fast::ControlPacketFactory& controlPacketFactory);
 
        std::string getProtocol() const;
        uint8_t getLevel() const;
        uint8_t getFlags() const;
        uint16_t getKeepAlive() const;
 
        const std::string& getClientId() const;
 
        bool getUsernameFlag() const;
        bool getPasswordFlag() const;
        bool getWillRetain() const;
        uint8_t getWillQoS() const;
        bool getWillFlag() const;
        bool getCleanSession() const;
 
        const std::string& getWillTopic() const;
        const std::string& getWillMessage() const;
        const std::string& getUsername() const;
        const std::string& getPassword() const;
 
    private:
        std::string protocol;
        uint8_t level = 0;
        uint8_t flags = 0;
        uint16_t keepAlive = 0;
 
        std::string clientId;
        std::string willTopic;
        std::string willMessage;
        std::string username;
        std::string password;
 
        bool usernameFlag = false;
        bool passwordFlag = false;
        bool willRetain = false;
        uint8_t willQoS = 0;
        bool willFlag = false;
        bool cleanSession = false;
        bool reserved = false;
    };
 
} // namespace iot::mqtt_fast::packets
 
/*
 
V5
    VARIABLE HEADER
        2022-09-19 17:37:53 0000000012:   1.     - 0x00  Length MSB
        2022-09-19 17:37:53 0000000012:   2.     - 0x04  Length LSB
        2022-09-19 17:37:53 0000000012:   3.   M - 0x4d Protocol
        2022-09-19 17:37:53 0000000012:   4.   Q - 0x51
        2022-09-19 17:37:53 0000000012:   5.   T - 0x54
        2022-09-19 17:37:53 0000000012:   6.   T - 0x54
 
        2022-09-19 17:37:53 0000000012:   7.     - 0x05  Version
        2022-09-19 17:37:53 0000000012:   8.     - 0x02  Flags
 
        2022-09-19 17:37:53 0000000012:   9.     - 0x00  Keep Aliva MSB 0x003c = 60sec
        2022-09-19 17:37:53 0000000012:  10.   < - 0x3c  Keep Alive LSB
 
        2022-09-19 17:37:53 0000000012:  11.     - 0x03  Properties Length
 
        2022-09-19 17:37:53 0000000012:  12.   ! - 0x21 Property: Receive Maximum (2Byte)
        2022-09-19 17:37:53 0000000012:  13.     - 0x00  Receive Maximum MSB
        2022-09-19 17:37:53 0000000012:  14.     - 0x14  Receive Maximum LSB
 
    PAYLOAD
        2022-09-19 17:37:53 0000000012:  15.     - 0x00  ID Length MSB
        2022-09-19 17:37:53 0000000012:  16.     - 0x02  ID Length LSB
        2022-09-19 17:37:53 0000000012:  17.   d - 0x64 ID-Byte 1
        2022-09-19 17:37:53 0000000012:  18.   f - 0x66 ID-Byte 2
 
    WILL Properties (optional)
    WILL Topic (optional)
    User Name
    Password
 
 */
 
#endif // IOT_MQTTFAST_PACKETS_CONNECT_H