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e3fe020089
Remove the PROTOCOLS section from the source files completely and instead generate them based on the header data in the curldown files. It also generates TLS backend information for options marked for TLS as protocol. Closes #13175
78 lines
1.9 KiB
Markdown
78 lines
1.9 KiB
Markdown
---
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c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
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SPDX-License-Identifier: curl
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Title: CURLINFO_CONDITION_UNMET
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Section: 3
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Source: libcurl
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See-also:
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- CURLOPT_TIMECONDITION (3)
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- CURLOPT_TIMEVALUE (3)
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- curl_easy_getinfo (3)
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- curl_easy_setopt (3)
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Protocol:
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- HTTP
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---
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# NAME
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CURLINFO_CONDITION_UNMET - get info on unmet time conditional or 304 HTTP response.
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# SYNOPSIS
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~~~c
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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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~~~
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# 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 CURLOPT_TIMECONDITION(3)). 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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# EXAMPLE
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~~~c
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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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~~~
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# AVAILABILITY
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Added in 7.19.4
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# RETURN VALUE
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Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
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