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CURLOPT_DNS_LOCAL_IP4(3) | curl_easy_setopt options | CURLOPT_DNS_LOCAL_IP4(3) |
NAME¶
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 (do not 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¶
CURL *curl = curl_easy_init(); if(curl) {
curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/foo.bin");
curl_easy_setopt(curl, CURLOPT_DNS_LOCAL_IP4, "192.168.0.14");
ret = curl_easy_perform(curl);
curl_easy_cleanup(curl); }
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¶
January 2, 2023 | libcurl 7.88.1 |