Specify to use Socks server on host. The server is expected
to recognize Socks version 5 protocol. If the server supports only
version 4, specify "-4" option like "SOCKS=host:port/-4".
The "-r" option controls which of DeleGate or Socks server does the name
resolution (from the host name of a target host to its IP address).
With a SocksV4 server, name resolution is done by DeleGate by default.
"-r" option make the resolution be delegated to the server
(This is applicable if the server supports extended Socks4A protocol).
With a SocksV5 server, name resolution is delegated to the server
by default, and "-r" option make the resolution be done locally by DeleGate.
By default, the connection establishment via Socks will be tried
after all of other trials failed, but you can control the order by
the CONNECT parameter.
If the dstHostList part is omitted, the default value for it is
"!.localnet". This default value can be changed
by redefining the named HostList ".socksdst"
which is predefined as HOSTLIST=".socksdst:!.localnet"