uses the new client_write() function

       Windows systems if the target is stdout. Use -O or -o parameters

       to prevent CR/LF translation (this then goes to a binary mode

       file descriptor). */

    if(nread != data->fwrite (buf, 1, nread, data->out)) {

      failf (data, "Failed writing output");

      return CURLE_WRITE_ERROR;

    }

    res = client_write(data, CLIENTWRITE_BODY, buf, nread);

    if(res)

      return res;

    now = tvnow();

    if(pgrsUpdate(data))

      res = CURLE_ABORTED_BY_CALLBACK;