    # File lib/phusion_passenger/utils.rb, line 439
            def local_socket_address?(address)
                    case get_socket_address_type(address)
                    when :unix
                            return true
                    when :tcp
                            host, port = address.sub(%r{^tcp://}, '').split(':', 2)
                            return host == "127.0.0.1" || host == "::1" || host == "localhost"
                    else
                            raise ArgumentError, "Unknown socket address type for '#{address}'."
                    end
            end