mojave man page for curlopt_timecondition

CURLOPT_TIMECONDITION(3)				     curl_easy_setopt options					  CURLOPT_TIMECONDITION(3)

NAME
       CURLOPT_TIMECONDITION - select condition for a time request

SYNOPSIS
       #include <curl/curl.h>

       CURLcode curl_easy_setopt(CURL *handle, CURLOPT_TIMECONDITION, long cond);

DESCRIPTION
       Pass  a	long  as  parameter.  This  defines  how  the CURLOPT_TIMEVALUE(3) time value is treated. You can set this parameter to CURL_TIME-
       COND_IFMODSINCE or CURL_TIMECOND_IFUNMODSINCE.

       The last modification time of a file is not always known and in such instances this feature will have no effect even if the given time con-
       dition  would  not  have been met. curl_easy_getinfo(3) with the CURLINFO_CONDITION_UNMET option can be used after a transfer to learn if a
       zero-byte successful "transfer" was due to this condition not matching.

DEFAULT
       CURL_TIMECOND_NONE (0)

PROTOCOLS
       HTTP, FTP, RTSP, and FILE

EXAMPLE
       CURL *curl = curl_easy_init();
       if(curl) {
	 curl_easy_setopt(curl, CURLOPT_URL, "http://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 request */
	 curl_easy_perform(curl);
       }

AVAILABILITY
       Always

RETURN VALUE
       Returns CURLE_OK

SEE ALSO
       CURLOPT_TIMEVALUE(3),

libcurl 7.54.0							  April 03, 2016					  CURLOPT_TIMECONDITION(3)