watts.js
var express = require('express');
var app = express();
var http = require("http");
var httpServer = http.createServer(app);
var clientSocket = require("socket.io-client");
var io = require('socket.io')(httpServer);
var net = require("net");
var ioC = require('socket.io-client');
var host1 = "http://192.168.0.7:80";
var host2 = "http://45.76.237.136:80"
var clientSocket = ioC.connect(host2, {reconnect: true});

var HOST = process.argv[2];
var PORT = 5555;

var server = net.createServer({ 'encoding':'utf8'}, function(socket) {
  socket.setEncoding("utf-8");

  socket.on("data", function (data) {
    if(data == data) {
      var apparentPW = Math.round(data*120)
      console.log(apparentPW);
      io.emit("watts",apparentPW);
      clientSocket.emit("watts",apparentPW);
    }
  });

});

server.listen(PORT,HOST);

console.log("Server listening on " + HOST + ":" + PORT);

app.use(express.static(__dirname + '/'));

/*
app.get('/', function(req, res) {
        res.sendFile(__dirname + '/temperatura.html');
});
*/

app.get('/graph', function(req, res) {
        res.sendFile(__dirname + '/path.html');
});

httpServer.listen(3000, '0.0.0.0', function() {
        console.log('El servidor está listo...');
});