Provided by: libcurl4-doc_7.68.0-1ubuntu2.25_all 

NAME
CURLOPT_COOKIEFILE - file name to read cookies from
SYNOPSIS
#include <curl/curl.h>
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_COOKIEFILE, char *filename);
DESCRIPTION
Pass a pointer to a zero terminated string as parameter. It should point to the file name of your file
holding cookie data to read. The cookie data can be in either the old Netscape / Mozilla cookie data
format or just regular HTTP headers (Set-Cookie style) dumped to a file.
It also enables the cookie engine, making libcurl parse and send cookies on subsequent requests with this
handle.
Given an empty or non-existing file or by passing the empty string ("") to this option, you can enable
the cookie engine without reading any initial cookies. If you tell libcurl the file name is "-" (just a
single minus sign), libcurl will instead read from stdin.
This option only reads cookies. To make libcurl write cookies to file, see CURLOPT_COOKIEJAR(3).
Exercise caution if you are using this option and multiple transfers may occur. If you use the Set-
Cookie format and don't specify a domain then the cookie is sent for any domain (even after redirects are
followed) and cannot be modified by a server-set cookie. If a server sets a cookie of the same name then
both will be sent on a future transfer to that server, likely not what you intended. To address these
issues set a domain in Set-Cookie (doing that will include sub-domains) or use the Netscape format.
If you use this option multiple times, you just add more files to read. Subsequent files will add more
cookies.
The application does not have to keep the string around after setting this option.
DEFAULT
NULL
PROTOCOLS
HTTP
EXAMPLE
CURL *curl = curl_easy_init();
if(curl) {
curl_easy_setopt(curl, CURLOPT_URL, "http://example.com/foo.bin");
/* get cookies from an existing file */
curl_easy_setopt(curl, CURLOPT_COOKIEFILE, "/tmp/cookies.txt");
ret = curl_easy_perform(curl);
curl_easy_cleanup(curl);
}
AVAILABILITY
As long as HTTP is supported
RETURN VALUE
Returns CURLE_OK if HTTP is supported, and CURLE_UNKNOWN_OPTION if not.
SEE ALSO
CURLOPT_COOKIE(3), CURLOPT_COOKIEJAR(3),
libcurl 7.68.0 March 13, 2018 CURLOPT_COOKIEFILE(3)