Unknown option: "-3" Unix manual page for CURLOPT_POSTFIELDSIZE_LARGE. (host=minya system=Darwin)
CURLOPT_POSTFIELDSIZE_LARGEcurl_easy_setopt optiCURLOPT_POSTFIELDSIZE_LARGE(3)

NAME
       CURLOPT_POSTFIELDSIZE_LARGE - size of POST data pointed to

SYNOPSIS
       #include <curl/curl.h>

       CURLcode curl_easy_setopt(CURL *handle, CURLOPT_POSTFIELDSIZE_LARGE,
                                 curl_off_t size);

DESCRIPTION
       If  you  want  to  post  data to the server without having libcurl do a
       strlen() to measure the data size, this option must be used. When  this
       option  is  used  you  can  post  fully binary data, which otherwise is
       likely to fail. If this size  is  set  to  -1,  the  library  will  use
       strlen() to get the size.

DEFAULT
       -1

PROTOCOLS
       HTTP(S)

EXAMPLE
       CURL *curl = curl_easy_init();
       if(curl) {
         const char *data = large_chunk;
         curl_off_t length_of_data; /* set somehow */

         curl_easy_setopt(curl, CURLOPT_URL, "http://example.com");

         /* size of the POST data */
         curl_easy_setopt(curl, CURLOPT_POSTFIELDSIZE_LARGE, length_of_data);

         curl_easy_setopt(curl, CURLOPT_POSTFIELDS, data);

         curl_easy_perform(curl);
       }

AVAILABILITY
       Along with HTTP

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

SEE ALSO
       CURLOPT_POSTFIELDS(3),  CURLOPT_COPYPOSTFIELDS(3),   CURLOPT_POSTFIELD-
       SIZE(3),

libcurl 7.54.0                 February 03, 2016CURLOPT_POSTFIELDSIZE_LARGE(3)