curlopt_dns_cache_timeout(3) [mojave man page]

CURLOPT_DNS_CACHE_TIMEOUT(3)				     curl_easy_setopt options				      CURLOPT_DNS_CACHE_TIMEOUT(3)

NAME

       CURLOPT_DNS_CACHE_TIMEOUT - set life-time for DNS cache entries

SYNOPSIS

       #include <curl/curl.h>

       CURLcode curl_easy_setopt(CURL *handle, CURLOPT_DNS_CACHE_TIMEOUT, long age);

DESCRIPTION

       Pass  a	long,  this  sets the timeout in seconds. Name resolves will be kept in memory and used for this number of seconds. Set to zero to
       completely disable caching, or set to -1 to make the cached entries remain forever. By default, libcurl caches this info for 60 seconds.

       The name resolve functions of various libc implementations don't re-read name server information unless explicitly told so (for example, by
       calling	res_init(3)).  This  may  cause libcurl to keep using the older server even if DHCP has updated the server info, and this may look
       like a DNS cache issue to the casual libcurl-app user.

       Note that DNS entries have a "TTL" property but libcurl doesn't use that. This DNS cache timeout is entirely speculative that a	name  will
       resolve to the same address for a certain small amount of time into the future.

DEFAULT

       60

PROTOCOLS

       All

EXAMPLE

       TODO

AVAILABILITY

       Always

RETURN VALUE

       Returns CURLE_OK

SEE ALSO

       CURLOPT_DNS_USE_GLOBAL_CACHE(3), CURLOPT_DNS_SERVERS(3),

libcurl 7.54.0							 February 03, 2016				      CURLOPT_DNS_CACHE_TIMEOUT(3)