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

NAME
       CURLINFO_SPEED_UPLOAD - get upload speed

SYNOPSIS
       #include <curl/curl.h>

       CURLcode  curl_easy_getinfo(CURL *handle, CURLINFO_SPEED_UPLOAD, double
       *speed);

DESCRIPTION
       Pass a pointer to a double to receive the  average  upload  speed  that
       curl measured for the complete upload. Measured in bytes/second.

PROTOCOLS
EXAMPLE
       TODO

AVAILABILITY
       Added in

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_SPEED_DOWNLOAD(3),

libcurl 7.54.0                 February 03, 2016      CURLINFO_SPEED_UPLOAD(3)