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

NAME
       CURLINFO_HEADER_SIZE - get size of retrieved headers

SYNOPSIS
       #include <curl/curl.h>

       CURLcode  curl_easy_getinfo(CURL  *handle,  CURLINFO_HEADER_SIZE,  long
       *sizep);

DESCRIPTION
       Pass a pointer to a long to receive the total size of all  the  headers
       received. Measured in number of bytes.

       The  total includes the size of any received headers suppressed by CUR-
       LOPT_SUPPRESS_CONNECT_HEADERS(3).

PROTOCOLS
       All

EXAMPLE
       TODO

AVAILABILITY
       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_REQUEST_SIZE(3),
       CURLINFO_SIZE_DOWNLOAD(3),

libcurl 7.54.0                  April 28, 2016         CURLINFO_HEADER_SIZE(3)