Unknown option: "-3" Unix manual page for CURLINFO_RESPONSE_CODE. (host=minya system=Darwin)
CURLINFO_RESPONSE_CODE(3)  curl_easy_getinfo options CURLINFO_RESPONSE_CODE(3)

NAME
       CURLINFO_RESPONSE_CODE - get the last response code

SYNOPSIS
       #include <curl/curl.h>

       CURLcode  curl_easy_getinfo(CURL  *handle, CURLINFO_RESPONSE_CODE, long
       *codep);

DESCRIPTION
       Pass a pointer to a long to receive the last received HTTP, FTP or SMTP
       response  code.  This option was previously known as CURLINFO_HTTP_CODE
       in libcurl 7.10.7 and earlier. The stored value  will  be  zero  if  no
       server  response  code  has  been received. Note that a proxy's CONNECT
       response should be read with CURLINFO_HTTP_CONNECTCODE(3) and not this.

       Support for SMTP responses added in 7.25.0.

PROTOCOLS
       HTTP, FTP and SMTP

EXAMPLE
       CURL *curl = curl_easy_init();
       if(curl) {
         CURLcode res;
         curl_easy_setopt(curl, CURLOPT_URL, "http://example.com");
         res = curl_easy_perform(curl);
         if(res == CURLE_OK) {
           long response_code;
           curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &response_code);
         }
         curl_easy_cleanup(curl);
       }

AVAILABILITY
       Added in 7.10.8. CURLINFO_HTTP_CODE was added in 7.4.1.

RETURN VALUE
       Returns  CURLE_OK  if the option is supported, and CURLE_UNKNOWN_OPTION
       if not.

SEE ALSO
       curl_easy_getinfo(3),    curl_easy_setopt(3),    CURLINFO_HTTP_CONNECT-
       CODE(3),

libcurl 7.54.0                 February 03, 2016     CURLINFO_RESPONSE_CODE(3)