Commit 179ad7a7fa9fc0550dce59d3182dd7103f8f44f0
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index.js
| 1 | // Include Nodejs' net module. | 1 | //express |
| 2 | const Net = require('net'); | 2 | const express = require('express'); |
| 3 | const converter = require('hex2dec'); | 3 | const app = express(); |
| 4 | // The port number and hostname of the server. | 4 | const config = require('./config/config.json'); |
| 5 | const port = 10001; | 5 | const socket = require('./socket/socket.js'); |
| 6 | const host = 'fipdebo.ddns.net'; | ||
| 7 | var respuesta = ''; | ||
| 8 | |||
| 9 | // Create a new TCP client. | ||
| 10 | const client = new Net.Socket(); | ||
| 11 | // Send a connection request to the server. | ||
| 12 | client.connect({ port: port, host: host }, function() { | ||
| 13 | // If there is no error, the server has accepted the request and created a new | ||
| 14 | // socket dedicated to us. | ||
| 15 | console.log('TCP connection established with the server.'); | ||
| 16 | var code = String.fromCharCode(01); | ||
| 17 | // The client can now send data to the server by writing to its socket. | ||
| 18 | console.info(client.write(code + 'i20100')); | ||
| 19 | }); | ||
| 20 | 6 | ||
| 21 | // The client can also receive data from the server by reading from its socket. | 7 | const port = config.puerto; |
| 22 | client.on('data', function(chunk) { | 8 | const host = config.direccion; |
| 23 | var data = chunk.toString('utf8'); | 9 | var fecha; |
| 24 | console.log('response', data); | 10 | |
| 25 | if (respuesta) { | 11 | app.listen(4500) |
| 26 | respuesta += data; | 12 | |
| 27 | } else { | 13 | app.get('/tank-info/:tank*?', function (req, res) { |
| 28 | var respuesta = data; | 14 | |
| 29 | } | 15 | socket.initConection(port, host); |
| 30 | 16 | ||
| 31 | if (data[data.length - 1].charCodeAt(0) == 3) { | 17 | var numberTank = req.params.tank ? req.params.tank : '00'; |
| 32 | var indice = 0; | ||
| 33 | var fecha = new Date(); | ||
| 34 | var respuesta = respuesta.slice(17, respuesta.length); | ||
| 35 | respuesta = respuesta.split('&&')[0]; | ||
| 36 | console.info(procesar(respuesta)); | ||
| 37 | } | ||
| 38 | |||
| 39 | // Request an end to the connection after the data has been received. | ||
| 40 | client.end(); | ||
| 41 | }); | ||
| 42 | 18 | ||
| 43 | client.on('end', function() { | 19 | socket.getTank('i201' + numberTank).then(function (response) { |
| 44 | console.log('Requested an end to the TCP connection'); | 20 | |
| 21 | //obtengo una cadena de caracteres, los primeros 17 datos son de informacion de tanque | ||
| 22 | // e información de la fecha | ||
| 23 | fecha = response.slice(7, 16); | ||
| 24 | |||
| 25 | var dataTanks = getJson(response.slice(17, response.length)); | ||
| 26 | |||
| 27 | res.status(200).send(dataTanks); | ||
| 28 | |||
| 29 | socket.end(); | ||
| 30 | }); | ||
| 45 | }); | 31 | }); |
| 46 | 32 | ||
| 47 | function procesar(respuesta) { | 33 | function getJson(tanks) { |
| 48 | var tanque = { | ||
| 49 | tanque: respuesta.slice(0,2), | ||
| 50 | producto: respuesta.slice(2,3), | ||
| 51 | estado: respuesta.slice(3,7), | ||
| 52 | campos: [] | ||
| 53 | } | ||
| 54 | 34 | ||
| 55 | var campos = parseInt(respuesta.slice(7,9)); | 35 | var json = { |
| 36 | tanques: [] | ||
| 37 | }; | ||
| 38 | var arraysTanks = []; | ||
| 56 | 39 | ||
| 57 | var inicio = 9; | 40 | while (tanks.length > 10) { |
| 58 | var fin = 17; | ||
| 59 | 41 | ||
| 60 | for (var i = 0; i < campos; i++) { | 42 | var stringTank = tanks.slice(0, 9); |
| 61 | tanque.campos.push(procesarCampo(respuesta.slice(inicio,fin))); | 43 | var cantOfProperties = stringTank.length + (parseInt(tanks.slice(7, 9)) * 8); |
| 62 | inicio += 8; | 44 | stringTank += tanks.slice(9, cantOfProperties) |
| 63 | fin += 8; | ||
| 64 | } | ||
| 65 | |||
| 66 | if ((fin - 8) < respuesta.length) { | ||
| 67 | var respuestas = procesar(respuesta.slice((fin - 8), respuesta.length)); | ||
| 68 | } else { | ||
| 69 | var respuestas = []; | ||
| 70 | } | ||
| 71 | 45 | ||
| 72 | respuestas.unshift(tanque); | 46 | arraysTanks.push(stringTank); |
| 73 | return respuestas; | ||
| 74 | } | ||
| 75 | 47 | ||
| 76 | function procesarCampo(campo) { | 48 | tanks = tanks.slice(stringTank.length, tanks.length); |
| 77 | var proceso = ''; | ||
| 78 | |||
| 79 | if (parseInt(campo) == 0) { | ||
| 80 | return 0; | ||
| 81 | } | 49 | } |
| 82 | 50 | ||
| 83 | for (var i = 0; i < campo.length; i++) { | 51 | arraysTanks.forEach(function (tank) { |
| 84 | proceso += hexToBinary(campo[i]); | 52 | var objTank = { |
| 85 | } | 53 | tank: tank.slice(0, 2), |
| 54 | fecha: fecha, | ||
| 55 | product: tank.slice(2, 3), | ||
| 56 | deliveryProgress: tank.slice(3, 4), | ||
| 57 | testProgress: tank.slice(4, 5), | ||
| 58 | alarm: tank.slice(5, 6), | ||
| 59 | volume: getValue(tank.slice(9, 17)), | ||
| 60 | tCVolume: getValue(tank.slice(17, 25)), | ||
| 61 | ullage: getValue(tank.slice(25, 33)), |
package.json
| 1 | { | 1 | { |
| 2 | "name": "tcp-prueba", | 2 | "name": "tcp-prueba", |
| 3 | "version": "1.0.0", | 3 | "version": "1.0.0", |
| 4 | "description": "", | 4 | "description": "", |
| 5 | "main": "index.js", | 5 | "main": "index.js", |
| 6 | "scripts": { | 6 | "scripts": { |
| 7 | "test": "echo \"Error: no test specified\" && exit 1" | 7 | "test": "echo \"Error: no test specified\" && exit 1" |
| 8 | }, | 8 | }, |
| 9 | "author": "", | 9 | "author": "", |
| 10 | "license": "ISC", | 10 | "license": "ISC", |
| 11 | "dependencies": { | 11 | "dependencies": { |
| 12 | "express": "^4.16.4", | ||
| 12 | "hex2dec": "^1.1.2", | 13 | "hex2dec": "^1.1.2", |
| 13 | "net": "^1.0.2" | 14 | "net": "^1.0.2" |
| 14 | } | 15 | } |
| 15 | } | 16 | } |
| 16 | 17 |