code: def _nginx_stream_spec(port_spec, bridge_ip):
      
      server_string_spec = "\t server {\n"
      server_string_spec += "\t \t {}\n".format(_nginx_listen_string(port_spec))
      server_string_spec += "\t \t {}\n".format(_nginx_proxy_string(port_spec, bridge_ip))
      server_string_spec += "\t }\n"
      return server_string_spec
docs: This will output the nginx stream config string for specific port spec