NAME

       CURLINFO_CONDITION_UNMET - get info on unmet time conditional or 304 HTTP response.

SYNOPSIS

       #include <curl/curl.h>

       CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_CONDITION_UNMET,
                                  long *unmet);

DESCRIPTION

       Pass a pointer to a long to receive the number 1 if the condition provided in the previous
       request did not match (see CURLOPT_TIMECONDITION(3)). Alas, if this returns a 1  you  know
       that  the  reason  you  did  not  get  data  in  return  is because it did not fulfill the
       condition. The long this argument points to will  get  a  zero  stored  if  the  condition
       instead  was  met.  This  can also return 1 if the server responded with a 304 HTTP status
       code, for example after sending a custom "If-Match-*" header.

PROTOCOLS

       HTTP and some

EXAMPLE

       CURL *curl = curl_easy_init();
       if(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,
                          (long)CURL_TIMECOND_IFMODSINCE);

         /* Perform the request */
         res = curl_easy_perform(curl);

         if(!res) {
           /* check the time condition */
           long unmet;
           res = curl_easy_getinfo(curl, CURLINFO_CONDITION_UNMET, &unmet);
           if(!res) {
             printf("The time condition was %sfulfilled\n", unmet?"NOT":"");
           }
         }
       }

AVAILABILITY

       Added in 7.19.4

RETURN VALUE

       Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.

SEE ALSO

       curl_easy_getinfo(3), curl_easy_setopt(3),