#include void MQTTInit(std::string _mqttURI, std::string _clientid, std::string _user, std::string _password, std::string _LWTContext, int _keepalive); //void MQTTInit(std::string _mqttURI, std::string _clientid, std::string _user = "", std::string _password = ""); void MQTTPublish(std::string _key, std::string _content);