CURLOPT_TIMECONDITION(3)

1CURLOPT_TIMECONDITION(3)   curl_easy_setopt options   CURLOPT_TIMECONDITION(3)
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NAME

6       CURLOPT_TIMECONDITION - select condition for a time request
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SYNOPSIS

9       #include <curl/curl.h>
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11       CURLcode  curl_easy_setopt(CURL  *handle,  CURLOPT_TIMECONDITION,  long
12       cond);
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DESCRIPTION

15       Pass a long as parameter. This  defines  how  the  CURLOPT_TIMEVALUE(3)
16       time  value  is  treated.  You  can  set  this  parameter to CURL_TIME‐
17       COND_IFMODSINCE or CURL_TIMECOND_IFUNMODSINCE.
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19       The last modification time of a file is not always known  and  in  such
20       instances  this feature will have no effect even if the given time con‐
21       dition  would  not  have  been  met.  curl_easy_getinfo(3)   with   the
22       CURLINFO_CONDITION_UNMET  option  can be used after a transfer to learn
23       if a zero-byte successful "transfer" was  due  to  this  condition  not
24       matching.
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DEFAULT

27       CURL_TIMECOND_NONE (0)
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PROTOCOLS

30       HTTP, FTP, RTSP, and FILE
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EXAMPLE

33       CURL *curl = curl_easy_init();
34       if(curl) {
35         curl_easy_setopt(curl, CURLOPT_URL, "http://example.com");
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37         /* January 1, 2020 is 1577833200 */
38         curl_easy_setopt(curl, CURLOPT_TIMEVALUE, 1577833200L);
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40         /* If-Modified-Since the above time stamp */
41         curl_easy_setopt(curl, CURLOPT_TIMECONDITION, CURL_TIMECOND_IFMODSINCE);
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43         /* Perform the request */
44         curl_easy_perform(curl);
45       }
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AVAILABILITY

48       Always
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RETURN VALUE

51       Returns CURLE_OK
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