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Updated: Thursday, June 13, 2019
 
 

CURLOPT_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

curl_easy_setopt options                       CURLOPT_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.


ATTRIBUTES
       See attributes(7) for descriptions of the following attributes:


       +---------------+------------------+
       |ATTRIBUTE TYPE | ATTRIBUTE VALUE  |
       +---------------+------------------+
       |Availability   | web/curl         |
       +---------------+------------------+
       |Stability      | Uncommitted      |
       +---------------+------------------+
SEE ALSO
       CURLOPT_SHARE(3), CURLOPT_DNS_CACHE_TIMEOUT(3),



NOTES
       This    software    was    built    from    source     available     at
       https://github.com/oracle/solaris-userland.    The  original  community
       source   was    downloaded    from     https://github.com/curl/curl/ar-
       chive/curl-7_64_0.zip

       Further information about this software can be found on the open source
       community website at http://curl.haxx.se/.



libcurl 7.37.0                    17 Jun 2014
                                               CURLOPT_DNS_USE_GLOBAL_CACHE(3)