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CURLOPT_DNS_USE_GLOBAL_CACHcurl_easy_setopt optCURLOPT_DNS_USE_GLOBAL_CACHE(3)

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  dele-
       tions. 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),

libcurl 7.63.0			 May 31, 2017  CURLOPT_DNS_USE_GLOBAL_CACHE(3)