CURLINFO_CONDITION_UNMET(3)                          curl_easy_getinfo options

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 didn't match (see
       _TIMECONDITION&section=3">CURLOPT_TIMECONDITION(3)). Alas, if this returns a 1 you know that the
       reason you didn't get data in return is because it didn't 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, 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),

libcurl 7.77.0                 November 4, 2020    CURLINFO_CONDITION_UNMET(3)