size_t serverToFile(char* buffer, size_t size, size_t nmemb, void* null) {
    return size * nmemb;
}
struct prog {
    bool abort = false;
};

int progress_callback(prog* meta, curl_off_t _, curl_off_t _1, curl_off_t _2, curl_off_t _3) {
    if (meta->abort) {
        std::cout << "aborted\n";
        return 1;
    }
    return 0;
}

void curl_stuff(CURL* curl) {
    prog p;
    curl_easy_setopt(curl, CURLOPT_NOPROGRESS, false);
    curl_easy_setopt(curl, CURLOPT_XFERINFOFUNCTION, progress_callback);
    curl_easy_setopt(curl, CURLOPT_XFERINFODATA, &p);

    curl_easy_setopt(curl, CURLOPT_USERNAME, "root");
    curl_easy_setopt(curl, CURLOPT_PASSWORD, "root");

    auto url = "ftp://host/file.zip";
    curl_easy_setopt(curl, CURLOPT_URL, url);
    curl_easy_setopt(curl, CURLOPT_PORT, 21);

    curl_easy_setopt(curl, CURLOPT_MAX_RECV_SPEED_LARGE, 10000); // so it not downloaded too fast
    curl_easy_setopt(curl, CURLOPT_BUFFERSIZE, 10000);

    curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, serverToFile);
    curl_easy_setopt(curl, CURLOPT_WRITEDATA, nullptr);

    curl_easy_setopt(curl, CURLOPT_RESUME_FROM_LARGE, 100);
    auto thread1 = std::thread([&p]() {
        std::this_thread::sleep_for(std::chrono::seconds(10));

        p.abort = true;
        return;
    });
    CURLcode res = curl_easy_perform(curl);

    thread1.join();
    std::cout << "response: " << curl_easy_strerror(res) << " for " << url << "\n";
}

int main(int argc, char** argv) {
    curl_global_init(CURL_GLOBAL_DEFAULT);
    CURL* curl = curl_easy_init();
    if (!curl) {
        // Failed to init curl
        curl_global_cleanup();
        std::cout << "failed to init curl, probably memory issues\n";
        return 0;
    }

    curl_stuff(curl);
    auto start = std::chrono::steady_clock::now();
    std::cout << "easy cleanup\n";
    curl_easy_cleanup(curl);
    auto time = std::chrono::steady_clock::now() - start;
    std::cout << "global cleanup easy took:" << std::chrono::duration_cast<std::chrono::seconds>(time).count() << "s\n";
    curl_global_cleanup();
    return 0;
}