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.\" generated by cd2nroff 0.1 from CURLINFO_CONDITION_UNMET.md
.TH CURLINFO_CONDITION_UNMET 3 "2025-06-27" libcurl
.SH NAME
CURLINFO_CONDITION_UNMET \- get info on unmet time conditional or 304 HTTP response.
.SH SYNOPSIS
.nf
#include <curl/curl.h>
CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_CONDITION_UNMET,
long *unmet);
.fi
.SH DESCRIPTION
Pass a pointer to a long to receive the number 1 if the condition provided in
the previous request did not match (see \fICURLOPT_TIMECONDITION(3)\fP). 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.
.SH PROTOCOLS
This functionality affects http only
.SH EXAMPLE
.nf
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":"");
}
}
}
}
.fi
.SH AVAILABILITY
Added in curl 7.19.4
.SH RETURN VALUE
\fIcurl_easy_getinfo(3)\fP returns a CURLcode indicating success or error.
CURLE_OK (0) means everything was OK, non\-zero means an error occurred, see
\fIlibcurl\-errors(3)\fP.
.SH SEE ALSO
.BR CURLOPT_TIMECONDITION (3),
.BR CURLOPT_TIMEVALUE (3),
.BR curl_easy_getinfo (3),
.BR curl_easy_setopt (3)