bionic (3) CURLOPT_TIMECONDITION.3.gz

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_TIMECOND_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  condition  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),