Не отправляются все заголовки

int main(int argc, char** argv) {
    CURL *curl_handle = curl_easy_init();   
    struct curl_slist *headers = NULL;
    curl_slist_append(headers, "Host: localhost");
    curl_slist_append(headers, "Connection: keep-alive");
    curl_slist_append(headers, "User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.2785.21 Safari/537.36 MMS/1.0.2531.0");
    curl_slist_append(headers, "Accept: */*");
    curl_slist_append(headers, "Referer: https://localhost/start.php");
    curl_slist_append(headers, "Accept-Encoding: gzip, deflate, sdch, br");
    curl_slist_append(headers, "Accept-Language: ru-RU,ru;q=0.8,en-US;q=0.6,en;q=0.4");
    if (curl_handle) {
        curl_easy_setopt(curl_handle, CURLOPT_HEADER, 1);
        curl_easy_setopt(curl_handle, CURLOPT_HTTPHEADER, headers);
        curl_easy_setopt(curl_handle, CURLOPT_URL, "https://localhost/js/test.js");
        std::string content;
        curl_easy_setopt(curl_handle, CURLOPT_WRITEFUNCTION, writer);
        curl_easy_setopt(curl_handle, CURLOPT_WRITEDATA, &content);
        curl_easy_setopt(curl_handle, CURLOPT_SSL_VERIFYPEER, 0);
        curl_easy_setopt(curl_handle, CURLOPT_SSL_VERIFYHOST, 0);
        CURLcode res = curl_easy_perform(curl_handle);
        if(res != CURLE_OK)
            std::cout<<"Error #"<<res<<" "<<curl_easy_strerror(res) <<std::endl;
        curl_slist_free_all(headers);
        curl_easy_cleanup(curl_handle);
        std::cout << content << std::endl;
    }
}

headers = curl_slist_append(headers, "Host: localhost");
// итд