bool doGET(const std::string &uri, std::string &response);
bool doPOST(const std::string &uri, const nlohmann::json &j, std::string &reponse);
bool doGET(const std::string &uri, std::string &response);
bool doPOST(const std::string &uri, const nlohmann::json &j, std::string &reponse);