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CURLOPT_DNS_USE_GLOBAL_CACHE(3)     libcurl    CURLOPT_DNS_USE_GLOBAL_CACHE(3)


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 7.11.1. Function removed in 7.62.0.


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),

ibcurl 8.1.2                    April 26, 2023 CURLOPT_DNS_USE_GLOBAL_CACHE(3)

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