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)