--proxy URL                          Use the specified HTTP/HTTPS/SOCKS
                                     proxy. To enable SOCKS proxy, specify a
                                     proper scheme. For example
                                     socks5://127.0.0.1:1080/. Pass in an
                                     empty string (--proxy "") for direct
                                     connection
--socket-timeout SECONDS             Time to wait before giving up, in
                                     seconds
--source-address IP                  Client-side IP address to bind to
-4, --force-ipv4                     Make all connections via IPv4
-6, --force-ipv6                     Make all connections via IPv6