77 lines
1.8 KiB
Markdown
77 lines
1.8 KiB
Markdown
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---
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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_FILETIME
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Section: 3
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Source: libcurl
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See-also:
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- CURLOPT_FILETIME (3)
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- curl_easy_getinfo (3)
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- curl_easy_setopt (3)
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---
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# NAME
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CURLINFO_FILETIME - get the remote time of the retrieved document
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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_FILETIME, long *timep);
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~~~
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# DESCRIPTION
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Pass a pointer to a long to receive the remote time of the retrieved document
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in number of seconds since January 1 1970 in the GMT/UTC time zone. If you get
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-1, it can be because of many reasons (it might be unknown, the server might
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hide it or the server does not support the command that tells document time
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etc) and the time of the document is unknown.
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You must tell libcurl to collect this information before the transfer is made,
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by using the CURLOPT_FILETIME(3) option to curl_easy_setopt(3) or
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you this unconditionally gets a -1 back.
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Consider using CURLINFO_FILETIME_T(3) to be able to extract dates beyond
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the year 2038 on systems using 32 bit longs (Windows).
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# PROTOCOLS
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HTTP(S), FTP(S), SFTP
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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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/* Ask for filetime */
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curl_easy_setopt(curl, CURLOPT_FILETIME, 1L);
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res = curl_easy_perform(curl);
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if(CURLE_OK == res) {
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long filetime = 0;
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res = curl_easy_getinfo(curl, CURLINFO_FILETIME, &filetime);
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if((CURLE_OK == res) && (filetime >= 0)) {
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time_t file_time = (time_t)filetime;
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printf("filetime: %s", ctime(&file_time));
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}
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}
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/* always cleanup */
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curl_easy_cleanup(curl);
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}
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}
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~~~
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# AVAILABILITY
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Added in 7.5
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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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