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 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

       Deprecated since 7.62.0. Has no function.

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),

libcurl 7.81.0                                  November 26, 2021                CURLOPT_DNS_USE_GLOBAL_CACHE(3)