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62 lines
1.4 KiB
62 lines
1.4 KiB
#ifndef MQTT_PROTOCOL_H
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#define MQTT_PROTOCOL_H
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#include "protocol.h"
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#include <mqtt.h>
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#include <udp.h>
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#include <cJSON.h>
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#include <mbedtls/aes.h>
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#include <freertos/FreeRTOS.h>
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#include <freertos/event_groups.h>
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#include <functional>
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#include <string>
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#include <map>
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#include <mutex>
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#define MQTT_PING_INTERVAL_SECONDS 90
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#define MQTT_RECONNECT_INTERVAL_MS 10000
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#define MQTT_PROTOCOL_SERVER_HELLO_EVENT (1 << 0)
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class MqttProtocol : public Protocol {
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public:
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MqttProtocol();
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~MqttProtocol();
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void Start() override;
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void SendAudio(const std::vector<uint8_t>& data) override;
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bool OpenAudioChannel() override;
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void CloseAudioChannel() override;
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bool IsAudioChannelOpened() const override;
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private:
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EventGroupHandle_t event_group_handle_;
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std::string endpoint_;
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std::string client_id_;
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std::string username_;
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std::string password_;
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std::string publish_topic_;
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std::mutex channel_mutex_;
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Mqtt* mqtt_ = nullptr;
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Udp* udp_ = nullptr;
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mbedtls_aes_context aes_ctx_;
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std::string aes_nonce_;
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std::string udp_server_;
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int udp_port_;
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uint32_t local_sequence_;
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uint32_t remote_sequence_;
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bool StartMqttClient(bool report_error=false);
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void ParseServerHello(const cJSON* root);
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std::string DecodeHexString(const std::string& hex_string);
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bool SendText(const std::string& text) override;
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};
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#endif // MQTT_PROTOCOL_H
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