Hi,
  Just a quick check, when one does
curl_easy_setopt( c, CURLOPT_TIMECONDITION, TIMECOND_IFMODSINCE );
curl_easy_setopt( c, CURLOPT_TIMEVALUE, mtime );
perform();

is the recommended way to test if the file has been changed and thus
downloaded to test the HTTP code CURLINFO_EFFECTIVE_URL ?

Thanks.

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