focal (3) CURLINFO_FILETIME.3.gz

NAME

       CURLINFO_FILETIME - get the remote time of the retrieved document

SYNOPSIS

       #include <curl/curl.h>

       CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_FILETIME, long *timep);

DESCRIPTION

       Pass a pointer to a long to receive the remote time of the retrieved document (in number of seconds since
       1 jan 1970 in the GMT/UTC time zone). If you get -1, it can be because  of  many  reasons  (it  might  be
       unknown, the server might hide it or the server doesn't support the command that tells document time etc)
       and the time of the document is unknown.

       You must  tell  libcurl  to  collect  this  information  before  the  transfer  is  made,  by  using  the
       CURLOPT_FILETIME(3) option to curl_easy_setopt(3) or you will unconditionally get a -1 back.

       Consider  using  CURLINFO_FILETIME_T(3) to be able to extract dates beyond the year 2038 on systems using
       32 bit longs.

PROTOCOLS

       HTTP(S), FTP(S), SFTP

EXAMPLE

       curl = curl_easy_init();
       if(curl) {
         curl_easy_setopt(curl, CURLOPT_URL, url);
         /* Ask for filetime */
         curl_easy_setopt(curl, CURLOPT_FILETIME, 1L);
         res = curl_easy_perform(curl);
         if(CURLE_OK == res) {
           res = curl_easy_getinfo(curl, CURLINFO_FILETIME, &filetime);
           if((CURLE_OK == res) && (filetime >= 0)) {
             time_t file_time = (time_t)filetime;
             printf("filetime %s: %s", filename, ctime(&file_time));
           }
         }
         /* always cleanup */
         curl_easy_cleanup(curl);
       }

AVAILABILITY

       Added in 7.5

RETURN VALUE

       Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.

SEE ALSO

       curl_easy_getinfo(3), curl_easy_setopt(3),