If you give a *_LARGE option you MUST make sure that the type of the passed-in

       DLL may not use the variable's memory when passed in to it from an app

       like this. */

    /* and give the size of the upload (optional) */

    curl_easy_setopt(curl, CURLOPT_INFILESIZE_LARGE, file_info.st_size);

    /* Set the size of the file to upload (optional).  If you give a *_LARGE

       option you MUST make sure that the type of the passed-in argument is a

       curl_off_t. If you use CURLOPT_INFILESIZE (without _LARGE) you must

       make sure that to pass in a type 'long' argument. */

    curl_easy_setopt(curl, CURLOPT_INFILESIZE_LARGE,

                     (curl_off_t)file_info.st_size);

    /* Now run off and do what you've been told! */

    res = curl_easy_perform(curl);