Manpages - CURLOPT_COOKIEJAR.3

CURLOPT_COOKIEJAR - file name to store cookies to

#include <curl/curl.h>

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 sent accordingly.

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 this option.

NULL

HTTP

  CURL *curl = curl_easy_init();
  if(curl) {
    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! */
    curl_easy_cleanup(curl);
  }

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),