NAME

       CURLOPT_DNS_USE_GLOBAL_CACHE - global DNS cache

SYNOPSIS

       #include <curl/curl.h>

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

DESCRIPTION

       Has no function since 7.62.0. Do not use!

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

       See CURLOPT_SHARE(3) and curl_share_init(3) for the correct way to share DNS cache between
       transfers.

DEFAULT

       0

PROTOCOLS

       This functionality affects all supported protocols

EXAMPLE

       int main(void)
       {
         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);
         }
       }

DEPRECATED

       Deprecated since 7.11.1. Functionality removed in 7.62.0.

AVAILABILITY

       Added in curl 7.9.3

RETURN VALUE

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

SEE ALSO

       CURLOPT_DNS_CACHE_TIMEOUT(3), CURLOPT_SHARE(3)