1--- 2c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al. 3SPDX-License-Identifier: curl 4Title: CURLINFO_FILETIME 5Section: 3 6Source: libcurl 7See-also: 8 - CURLOPT_FILETIME (3) 9 - curl_easy_getinfo (3) 10 - curl_easy_setopt (3) 11Protocol: 12 - HTTP 13 - FTP 14 - SFTP 15--- 16 17# NAME 18 19CURLINFO_FILETIME - get the remote time of the retrieved document 20 21# SYNOPSIS 22 23~~~c 24#include <curl/curl.h> 25 26CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_FILETIME, long *timep); 27~~~ 28 29# DESCRIPTION 30 31Pass a pointer to a long to receive the remote time of the retrieved document 32in number of seconds since January 1 1970 in the GMT/UTC time zone. If you get 33-1, it can be because of many reasons (it might be unknown, the server might 34hide it or the server does not support the command that tells document time 35etc) and the time of the document is unknown. 36 37You must tell libcurl to collect this information before the transfer is made, 38by using the CURLOPT_FILETIME(3) option to curl_easy_setopt(3) or 39you this unconditionally gets a -1 back. 40 41Consider using CURLINFO_FILETIME_T(3) to be able to extract dates beyond 42the year 2038 on systems using 32 bit longs (Windows). 43 44# EXAMPLE 45 46~~~c 47int main(void) 48{ 49 CURL *curl = curl_easy_init(); 50 if(curl) { 51 CURLcode res; 52 curl_easy_setopt(curl, CURLOPT_URL, "https://example.com"); 53 /* Ask for filetime */ 54 curl_easy_setopt(curl, CURLOPT_FILETIME, 1L); 55 res = curl_easy_perform(curl); 56 if(CURLE_OK == res) { 57 long filetime = 0; 58 res = curl_easy_getinfo(curl, CURLINFO_FILETIME, &filetime); 59 if((CURLE_OK == res) && (filetime >= 0)) { 60 time_t file_time = (time_t)filetime; 61 printf("filetime: %s", ctime(&file_time)); 62 } 63 } 64 /* always cleanup */ 65 curl_easy_cleanup(curl); 66 } 67} 68~~~ 69 70# AVAILABILITY 71 72Added in 7.5 73 74# RETURN VALUE 75 76Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not. 77
