65 lines
2.0 KiB
Groff
65 lines
2.0 KiB
Groff
.\" generated by cd2nroff 0.1 from CURLINFO_CONDITION_UNMET.md
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.TH CURLINFO_CONDITION_UNMET 3 "2025-07-07" libcurl
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.SH NAME
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CURLINFO_CONDITION_UNMET \- get info on unmet time conditional or 304 HTTP response.
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.SH SYNOPSIS
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.nf
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#include <curl/curl.h>
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CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_CONDITION_UNMET,
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long *unmet);
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.fi
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.SH DESCRIPTION
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Pass a pointer to a long to receive the number 1 if the condition provided in
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the previous request did not match (see \fICURLOPT_TIMECONDITION(3)\fP). Alas,
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if this returns a 1 you know that the reason you did not get data in return is
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because it did not fulfill the condition. The long this argument points to
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gets a zero stored if the condition instead was met. This can also return 1 if
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the server responded with a 304 HTTP status code, for example after sending a
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custom "If\-Match\-*" header.
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.SH PROTOCOLS
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This functionality affects http only
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.SH EXAMPLE
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.nf
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int main(void)
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{
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CURL *curl = curl_easy_init();
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if(curl) {
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CURLcode res;
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curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
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/* January 1, 2020 is 1577833200 */
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curl_easy_setopt(curl, CURLOPT_TIMEVALUE, 1577833200L);
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/* If-Modified-Since the above time stamp */
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curl_easy_setopt(curl, CURLOPT_TIMECONDITION,
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(long)CURL_TIMECOND_IFMODSINCE);
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/* Perform the request */
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res = curl_easy_perform(curl);
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if(!res) {
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/* check the time condition */
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long unmet;
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res = curl_easy_getinfo(curl, CURLINFO_CONDITION_UNMET, &unmet);
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if(!res) {
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printf("The time condition was %sfulfilled\\n", unmet?"NOT":"");
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}
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}
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}
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}
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.fi
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.SH AVAILABILITY
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Added in curl 7.19.4
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.SH RETURN VALUE
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\fIcurl_easy_getinfo(3)\fP returns a CURLcode indicating success or error.
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CURLE_OK (0) means everything was OK, non\-zero means an error occurred, see
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\fIlibcurl\-errors(3)\fP.
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.SH SEE ALSO
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.BR CURLOPT_TIMECONDITION (3),
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.BR CURLOPT_TIMEVALUE (3),
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.BR curl_easy_getinfo (3),
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.BR curl_easy_setopt (3)
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