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CURLOPT_COOKIEJAR(3) curl_easy_setopt options CURLOPT_COOKIEJAR(3)
CURLOPT_COOKIEJAR - file name to store cookies to
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_COOKIEJAR, char *filename);
Pass a filename as char *, null-terminated. This will make libcurl
write all internally known cookies to the specified file when
curl_easy_cleanup(3) is called. If no cookies are known, no file will
be created. Specify "-" as filename to instead have the cookies written
to stdout. Using this option also enables cookies for this session, so
if you for example follow a location it will make matching cookies get
Note that libcurl does not read any cookies from the cookie jar. If you
want to read cookies from a file, use CURLOPT_COOKIEFILE(3).
If the cookie jar file cannot be created or written to (when the
curl_easy_cleanup(3) is called), libcurl will not and cannot report an
error for this. Using CURLOPT_VERBOSE(3) or CURLOPT_DEBUGFUNCTION(3)
will get a warning to display, but that is the only visible feedback
you get about this possibly lethal situation.
Since 7.43.0 cookies that were imported in the Set-Cookie format
without a domain name are not exported by this option.
The application does not have to keep the string around after setting
CURL *curl = curl_easy_init();
curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/foo.bin");
/* export cookies to this file when closing the handle */
curl_easy_setopt(curl, CURLOPT_COOKIEJAR, "/tmp/cookies.txt");
ret = curl_easy_perform(curl);
/* close the handle, write the cookies! */
Along with HTTP
Returns CURLE_OK if HTTP is supported, CURLE_UNKNOWN_OPTION if not, or
CURLE_OUT_OF_MEMORY if there was insufficient heap space.
CURLOPT_COOKIEFILE(3), CURLOPT_COOKIE(3), CURLOPT_COOKIELIST(3),
libcurl 7.87.0 May 17, 2022 CURLOPT_COOKIEJAR(3)