CURLOPT_DNS_USE_GLOBAL_CACHE - Man Page
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
Referenced By
curl_easy_setopt(3), curl_multi_add_handle(3), CURLOPT_DNS_CACHE_TIMEOUT(3), libcurl-thread(3).
April 26, 2023 ibcurl 8.1.2 libcurl