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

NAME
       CURLOPT_PROXYPORT - port number the proxy listens on

SYNOPSIS
       #include <curl/curl.h>

       CURLcode curl_easy_setopt(CURL *handle, CURLOPT_PROXYPORT, long port);

DESCRIPTION
       Pass a long with this option to set the proxy port to connect to unless
       it is specified in the proxy string CURLOPT_PROXY(3) or  uses  443  for
       https proxies and 1080 for all others as default.

       While  this  accepts a 'long', the port number is 16 bit so it can't be
       larger than 65535.

DEFAULT
       0, not specified which makes it use the default port

PROTOCOLS
       All

EXAMPLE
       TODO

AVAILABILITY
       Always

RETURN VALUE
       Returns CURLE_OK

SEE ALSO
       CURLOPT_PROXY(3), CURLOPT_PROXYTYPE(3),

libcurl 7.54.0                 November 24, 2016          CURLOPT_PROXYPORT(3)