From c9b8362ad7b6d3d491892f350b09e5912fd7cbb1 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Nicol=C3=A1s?= <nguarnieri@focasoftware.com>
Date: Thu, 28 Feb 2019 17:27:28 -0300
Subject: [PATCH] pruebas con exito para telemetria

---
 .gitignore   |   4 +++
 index.js     | 101 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 package.json |  15 +++++++++
 3 files changed, 120 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 index.js
 create mode 100644 package.json

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..27fa5eb
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,4 @@
+
+node_modules/
+
+package-lock\.json
diff --git a/index.js b/index.js
new file mode 100644
index 0000000..7a9f140
--- /dev/null
+++ b/index.js
@@ -0,0 +1,101 @@
+// Include Nodejs' net module.
+const Net = require('net');
+const converter = require('hex2dec');
+// The port number and hostname of the server.
+const port = 10001;
+const host = '190.15.193.76';
+var respuesta = '';
+
+// Create a new TCP client.
+const client = new Net.Socket();
+// Send a connection request to the server.
+client.connect({ port: port, host: host }, function() {
+    // If there is no error, the server has accepted the request and created a new 
+    // socket dedicated to us.
+    console.log('TCP connection established with the server.');
+    var code = String.fromCharCode(01);
+    // The client can now send data to the server by writing to its socket.
+    console.info(client.write(code + 'i201TT'));
+});
+
+// The client can also receive data from the server by reading from its socket.
+client.on('data', function(chunk) {
+    var data = chunk.toString('utf8');
+    if (respuesta) {
+        respuesta += data;
+    } else {
+        var respuesta = data;
+    }
+    
+    if (data[data.length - 1].charCodeAt(0) == 3 && respuesta.slice(1,5) == 'i201') {
+        var indice = 0;
+        var fecha = new Date();
+        var respuesta = respuesta.slice(17, respuesta.length);
+        respuesta = respuesta.split('&&')[0];
+        console.info(procesar(respuesta));
+    }
+    
+    // Request an end to the connection after the data has been received.
+   client.end();
+});
+
+client.on('end', function() {
+    console.log('Requested an end to the TCP connection');
+});
+
+function procesar(respuesta) {
+    var tanque = {
+        tanque: respuesta.slice(0,2),
+        producto: respuesta.slice(2,3),
+        estado: respuesta.slice(3,7),
+        campos: []
+    }
+
+    var campos = parseInt(respuesta.slice(7,9));
+
+    var inicio = 9;
+    var fin = 17;
+
+   for (var i = 0; i < campos; i++) {
+        tanque.campos.push(procesarCampo(respuesta.slice(inicio,fin)));
+        inicio += 8;
+        fin += 8;
+    }
+    
+    if ((fin - 8) < respuesta.length) {
+        var respuestas = procesar(respuesta.slice((fin - 8), respuesta.length));
+    } else {
+        var respuestas = [];
+    }
+
+    respuestas.unshift(tanque);
+    return respuestas;
+}
+
+function procesarCampo(campo) {
+    var proceso = '';
+    
+    if (parseInt(campo) == 0) {
+        return 0;
+    }
+
+    for (var i = 0; i < campo.length; i++) {
+        proceso += hexToBinary(campo[i]);
+    }
+
+    var signo = proceso[0] == 0 ? 1 : -1;
+    var exponente = parseInt(proceso.slice(1, 9), 2);
+    var mantiza = parseInt(proceso.slice(9, 32), 2);
+
+    return signo * Math.pow(2, exponente - 127) * (1 + (mantiza / 8388608));
+}
+
+function hexToBinary(digito) {
+    var binario = parseInt(digito, 16).toString(2);
+    
+    while (binario.length < 4) {
+        binario = '0' + binario;
+    }
+    
+    return binario;
+}
\ No newline at end of file
diff --git a/package.json b/package.json
new file mode 100644
index 0000000..66d9302
--- /dev/null
+++ b/package.json
@@ -0,0 +1,15 @@
+{
+  "name": "tcp-prueba",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "hex2dec": "^1.1.2",
+    "net": "^1.0.2"
+  }
+}
-- 
1.9.1