CURLOPT_DNS_LOCAL_IP4 man page

CURLOPT_DNS_LOCAL_IP4 — IPv4 address to bind DNS resolves to

Synopsis

#include <curl/curl.h>

CURLcode curl_easy_setopt(CURL *handle, CURLOPT_DNS_LOCAL_IP4, char *address);

Description

Set the local IPv4 address that the resolver should bind to. The argument should be of type char * and contain a single numerical IPv4 address as a string.  Set this option to NULL to use the default setting (don't bind to a specific IP address).

The application does not have to keep the string around after setting this option.

Default

NULL

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 7.33.0

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, or CURLE_BAD_FUNCTION_ARGUMENT when given a bad address.

See Also

CURLOPT_DNS_INTERFACE(3), CURLOPT_DNS_LOCAL_IP4(3),

Referenced By

curl_easy_setopt(3), CURLOPT_DNS_INTERFACE(3), CURLOPT_DNS_LOCAL_IP6(3), CURLOPT_DNS_SERVERS(3).

December 21, 2016 libcurl 7.54.0 curl_easy_setopt options