curl_easy_option_by_id - Man Page

#include <curl/curl.h>

const struct curl_easyoption *curl_easy_option_by_id(CURLoption id);

Given a CURLoption id, this function returns a pointer to the curl_easyoption struct, holding information about the curl_easy_setopt(3) option using that id. The option id is the CURLOPT_ prefixed ones provided in the standard curl/curl.h header file. This function returns the non-alias version of the cases where there is an alias function as well.

If libcurl has no option with the given id, this function returns NULL.

This functionality affects all supported protocols

int main(void)
{
  const struct curl_easyoption *opt = curl_easy_option_by_id(CURLOPT_URL);
  if(opt) {
    printf("This option wants type %x\n", opt->type);
  }
}

Added in curl 7.73.0

A pointer to the curl_easyoption struct for the option or NULL.

curl_easy_option_by_name(3), curl_easy_option_next(3), curl_easy_setopt(3)

curl_easy_option_by_name(3), curl_easy_option_next(3), curl_easy_setopt(3).