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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

       This functionality affects all supported protocols


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 curl 7.19.0


RETURN VALUE

       curl_easy_setopt(3) returns a CURLcode indicating success or error.

       CURLE_OK (0) means everything was OK, non-zero means an error occurred,
       see libcurl-errors(3).  Returns CURLE_BAD_FUNCTION_ARGUMENT if set to a
       negative value.


SEE ALSO

       CURLOPT_DEBUGFUNCTION(3), CURLOPT_STDERR(3)

libcurl                           2025-02-08          CURLOPT_ADDRESS_SCOPE(3)

curl 8.12.0 - Generated Tue Feb 11 15:43:16 CST 2025
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