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

NAME
       CURLINFO_SPEED_DOWNLOAD - get download speed

SYNOPSIS
       #include <curl/curl.h>

       CURLcode  curl_easy_getinfo(CURL *handle, CURLINFO_SPEED_DOWNLOAD, dou-
       ble *speed);

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

PROTOCOLS
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_SPEED_UPLOAD(3),

libcurl 7.54.0                 February 03, 2016    CURLINFO_SPEED_DOWNLOAD(3)