CURLOPT_ADDRESS_SCOPE(3)   curl_easy_setopt options   CURLOPT_ADDRESS_SCOPE(3)

NAME
       CURLOPT_ADDRESS_SCOPE - set 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, when using IPv6

EXAMPLE
       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_STDERR(3), CURLOPT_DEBUGFUNCTION(3),

libcurl 7.77.0                 November 4, 2020       CURLOPT_ADDRESS_SCOPE(3)