ccurl.cpp

#include <stdio.h>
#include <curl/curl.h>
 
int main(void)
{

  /* Windows users need to find how to use if_nametoindex() */
  CURL *curl;
  CURLcode res;
 
  curl = curl_easy_init();
  if(curl) {
    long my_scope_id;
    curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
 
    my_scope_id = (long)if_nametoindex("eth0");
    curl_easy_setopt(curl, CURLOPT_ADDRESS_SCOPE, my_scope_id);
 
    /* Perform the request, res gets the return code */
    res = curl_easy_perform(curl);
    /* Check for errors */
    if(res != CURLE_OK)
      fprintf(stderr, "curl_easy_perform() failed: %s\n",
              curl_easy_strerror(res));
 
    /* always cleanup */
    curl_easy_cleanup(curl);
  }
#endif
  return 0;
}