WA business api nodejs

I have a problem with my nodejs code and the connection to the official whatsapp business api.

The bot connects the webhook correctly, the messages arrive to the server correctly but the code I have implemented to make it respond is not being effective, I checked the code from top to bottom but I can't find the fault.

I leave you the codes so you have more context:

whatsappController.js:

const fs = require("fs"); const myConsole = new console.Console(fs.createWriteStream("./logs.txt")); const whatsappService = require("../services/whatsappService") const VerifyToken = (req, res) => {     try {         var accessToken = "456E7GR****************************";         var token = req.query["hub.verify_token"];         var challenge = req.query["hub.challenge"];         if(challenge != null && token != null && token == accessToken){             res.send(challenge);         }         else{             res.status(400).send();         }     } catch(e) {         res.status(400).send();     } } const ReceivedMessage = (req, res) => {     try {         var entry = (req.body["entry"])[0];         var changes = (entry["changes"])[0];         var value = changes["value"];         var messageObject = value["messages"];         if(typeof messageObject != "undefined"){             var messages = messageObject[0];             var text = GetTextUser(messages);             var number = messages["from"];             myConsole.log("Message: " + text + " from: " + number);             whatsappService.SendMessageWhatsApp("The user say: " + text, number);                          myConsole.log(messages);             myConsole.log(messageObject);         }         res.send("EVENT_RECEIVED");     }catch(e) {         myConsole.log(e);         res.send("EVENT_RECEIVED");     } } function GetTextUser(messages){     var text = "";     var typeMessage = messages["type"];     if(typeMessage == "text"){         text = (messages["text"])["body"];     }     else if(typeMessage == "interactive"){         var interactiveObject = messages["interactive"];         var typeInteractive = interactiveObject["type"];         if(typeInteractive == "button_reply"){             text = (interactiveObject["button_reply"])["title"];         }         else if(typeInteractive == "list_reply"){             text = (interactiveObject["list_reply"])["title"];         }else{             myConsole.log("sin mensaje");         }     }else{         myConsole.log("sin mensaje");     }     return text; } module.exports = {     VerifyToken,     ReceivedMessage } 

The second file is whatsappService which I make the connection with the api using the token and I also send the format of the message I want to send when I receive a hello for example...

const https = require("https"); function SendMessageWhatsApp(textResponse, number){     const data = JSON.stringify({         "messaging_product": "whatsapp",             "recipient_type": "individual",         "to": number,         "type": "text",         "text": {             "preview_url": false,             "body": textResponse         }     });     const options = {         host:"graph.facebook.com",         path:"/v15.0/1119744*************/messages",         method:"POST",         body:data,         headers: {             "Content-Type":"application/json",             Authorization:"Bearer EAAWNbICfuWEBAK5ObPbD******************************************************"         }     };     const req = https.request(options, res => {         res.on("data", d=> {             process.stdout.write(d);         });     });     req.on("error", error => {         console.error(error);     });     req.write(data);     req.end(); } module.exports = {     SendMessageWhatsApp }; 

Then I declare the routes for the get (to check token) and post (to receive and reply to messages) methods:

const expres = require("express"); const router = expres.Router(); const whatsappController = require("../controllers/whatsappControllers"); router .get("/", whatsappController.VerifyToken) .post("/", whatsappController.ReceivedMessage) module.exports = router; 

Last but not least the index file for the code to run correctly:

const express = require("express"); const apiRoute = require("./routes/routes"); const app = express(); const PORT = process.env.PORT || 3000 app.use(express.json()); app.use("/whatsapp", apiRoute); app.listen(PORT, () => (console.log("El puerto es: " + PORT))); 

I should clarify that I did the tests with Postman and they were all successful, it responds and receives messages correctly, finally I did the tests by uploading the bot to the Azure service and it works without problem until it has to answer/replicate the user's message.

The bot is not responding to the user when he talks to it but everything arrives correctly to the server and it processes it with a 200 response. I attach the evidence that there is no problem in the reception.

Finally I must say that in the meta platform I have everything configured as specified by the same platform, I have already configured the api to answer the messages through the webhooks and everything is correct, I just can't get the bot to answer correctly.

The bot is hosted in the Azure service.