Provided by: libcurl4-doc_7.55.1-1ubuntu2_all bug

NAME

       CURLOPT_DNS_USE_GLOBAL_CACHE - enable/disable global DNS cache

SYNOPSIS

       #include <curl/curl.h>

       CURLcode curl_easy_setopt(CURL *handle, CURLOPT_DNS_USE_GLOBAL_CACHE,
                                 long enable);

DESCRIPTION

       Pass  a  long. If the enable value is 1, it tells curl to use a global DNS cache that will
       survive between easy handle creations and deletions. This is not thread-safe and this will
       use a global variable.

       WARNING: this option is considered obsolete. Stop using it. Switch over to using the share
       interface instead! See CURLOPT_SHARE(3) and curl_share_init(3).

DEFAULT

       0

PROTOCOLS

       All

EXAMPLE

       CURL *curl = curl_easy_init();
       if(curl) {
         CURLcode ret;
         curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/");
         /* switch off the use of a global, thread unsafe, cache */
         curl_easy_setopt(curl, CURLOPT_DNS_USE_GLOBAL_CACHE, 0L);
         ret = curl_easy_perform(curl);
         curl_easy_cleanup(curl);
       }

AVAILABILITY

       Subject for removal in the future. Do not use!

RETURN VALUE

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

SEE ALSO

       CURLOPT_SHARE(3), CURLOPT_DNS_CACHE_TIMEOUT(3),