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 gets 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

       This functionality affects http only

EXAMPLE

       int main(void)
       {
         CURL *curl = curl_easy_init();
         if(curl) {
           CURLcode res;

           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 curl 7.19.4

RETURN VALUE

       curl_easy_getinfo(3) returns a CURLcode indicating success or error.

       CURLE_OK (0) means everything was OK, non-zero means an error occurred, see libcurl-errors(3).

SEE ALSO

       CURLOPT_TIMECONDITION(3), CURLOPT_TIMEVALUE(3), curl_easy_getinfo(3), curl_easy_setopt(3)

libcurl                                            2025-03-05                        CURLINFO_CONDITION_UNMET(3)