CURLOPT_TIMEVALUE − set time value for conditional
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_TIMEVALUE, long val);
Pass a long val as parameter. This should be the time counted as seconds since 1 Jan 1970, and the time will be used in a condition as specified with CURLOPT_TIMECONDITION(3).
On systems with 32 bit ’long’ variables, this option cannot set dates beyond the year 2038. Consider CURLOPT_TIMEVALUE_LARGE(3) instead.
HTTP, FTP, RTSP, and FILE
CURL *curl =
curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
/* January 1,
2020 is 1577833200 */
curl_easy_setopt(curl, CURLOPT_TIMEVALUE, 1577833200L);
If-Modified-Since the above time stamp */
curl_easy_setopt(curl, CURLOPT_TIMECONDITION, CURL_TIMECOND_IFMODSINCE);
/* Perform the