CURLOPT_DNS_SERVERS (3) Linux Manual Page
CURLOPT_DNS_SERVERS – set preferred DNS servers
Synopsis
#include <curl/curl.h>
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_DNS_SERVERS, char *servers);
Description
Pass a char * that is the list of DNS servers to be used instead of the system default. The format of the dns servers option is:
host[:port][,host[:port]]…
For example:
192.168.1.100,192.168.1.101,3.4.5.6
Default
NULL – use system default
Protocols
All
Example
TODO
Availability
This option requires that libcurl was built with a resolver backend that supports this operation. The c-ares backend is the only such one.
Added in 7.24.0
Return Value
Returns CURLE_OK if the option is supported, CURLE_UNKNOWN_OPTION if not, CURLE_NOT_BUILT_IN if support was disabled at compile-time, CURLE_BAD_FUNCTION_ARGUMENT when given an invalid server list, or CURLE_OUT_OF_MEMORY if there was insufficient heap space.