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.