Accuracy issue while monitoring status of live stream with YouTube API and libcurl

I am using YouTube API with libcurl to check my live stream status. The code snippet is reproduced below. Most of time the response returned by the function is_YouTubeLive is correct. I have not checked if CURLOPT_PROGRESSFUNCTION parameter can be of some used here. How can I improve the function?

CODE

static size_t WriteCallback(void* contents, size_t size, size_t nmemb, void* userp){    ((std::string*)userp)->append((char*)contents, size * nmemb);    return size * nmemb;}bool is_YouTubeLive(){    line1:    CURL* curl = curl_easy_init();    if (curl) {        std::string readBuffer;        curl_easy_setopt(curl, CURLOPT_URL, "https://www.googleapis.com/youtube/v3/search?part=snippet&channelId=[API KEY]");        curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteCallback);        curl_easy_setopt(curl, CURLOPT_WRITEDATA, &readBuffer);        CURLcode response = curl_easy_perform(curl);        if (response != CURLE_OK) {            fprintf(stderr, "curl_easy_perform() failed: %s\n", curl_easy_strerror(response));            return false;        }        curl_easy_cleanup(curl);        auto quota_error = readBuffer.find("quotaExceeded");        if (quota_error != std::string::npos) {                         this_thread::sleep_for(chrono::hours(1)); // sleep for 1 hour             goto line1;        }        auto found = readBuffer.find("\"liveBroadcastContent\": \"live\"");        if (found != std::string::npos) return true;    }    return false;}