CURLOPT_ADDRESS_SCOPE(3)   Library Functions Manual   CURLOPT_ADDRESS_SCOPE(3)

NAME
       CURLOPT_ADDRESS_SCOPE - scope id for IPv6 addresses

SYNOPSIS
       #include <curl/curl.h>

       CURLcode curl_easy_setopt(CURL *handle, CURLOPT_ADDRESS_SCOPE, long scope);

DESCRIPTION
       Pass a long specifying the scope id value to use when connecting to
       IPv6 addresses.

DEFAULT
       0

PROTOCOLS
       All

EXAMPLE
       #include <net/if.h> /* for if_nametoindex() */

       int main(void)
       {
         CURL *curl = curl_easy_init();
         if(curl) {
           CURLcode ret;
           long my_scope_id;
           curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/");
           my_scope_id = if_nametoindex("eth0");
           curl_easy_setopt(curl, CURLOPT_ADDRESS_SCOPE, my_scope_id);
           ret = curl_easy_perform(curl);
           curl_easy_cleanup(curl);
         }
       }

AVAILABILITY
       Added in 7.19.0

RETURN VALUE
       Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION
       if not.  Returns CURLE_BAD_FUNCTION_ARGUMENT if set to a negative
       value.

SEE ALSO
       CURLOPT_DEBUGFUNCTION(3), CURLOPT_STDERR(3)

libcurl                          April 26 2024        CURLOPT_ADDRESS_SCOPE(3)