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CURLOPT_DNS_LOCAL_IP4(3)            libcurl           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

       CURLOPT_DNS_INTERFACE(3), CURLOPT_DNS_LOCAL_IP6(3),

ibcurl 8.1.2                    April 26, 2023        CURLOPT_DNS_LOCAL_IP4(3)

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