CURL *curl = curl_easy_init();

CURLcode res;

std::string readBuffer;

if(curl) {

// We need to convert the string url to a char* here

// see https://stackoverflow.com/a/39693179

curl_easy_setopt(curl, CURLOPT_URL, url.c_str());

curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteCallback);

curl_easy_setopt(curl, CURLOPT_WRITEDATA, &readBuffer);

// Error codes can be found at

// https://curl.haxx.se/libcurl/c/libcurl-errors.html

res = curl_easy_perform(curl);

curl_easy_cleanup(curl);

}

return readBuffer;

{

((std::string*)userp)->append((char*)contents, size * nmemb);

return size * nmemb;