CURLINFO_CONDITION_UNMET(3)curl_easy_getinfo optionCURLINFO_CONDITION_UNMET(3)
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 pro-
vided in the previous request did not match (see CURLOPT_TIMECONDI-
TION(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, 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 7.81.0 November 26, 2021 CURLINFO_CONDITION_UNMET(3)
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