curl_easy_setopt ( curl, CURLOPT_URL, uri );
curl_easy_setopt ( curl, CURLOPT_WRITEDATA, f );
curl_easy_setopt ( curl, CURLOPT_WRITEFUNCTION, curl_write_func);
curl_easy_setopt ( curl, CURLOPT_URL, uri );
curl_easy_setopt ( curl, CURLOPT_WRITEDATA, f );
curl_easy_setopt ( curl, CURLOPT_WRITEFUNCTION, curl_write_func);