session object always undefined in client.on('authenticated')

[yelnyafacee]

Is there an existing issue for this?

• [X] I have searched the existing issues

Describe the bug

hi. my session object returned from client.on('authenticated', (session) => { ..... }); is always undefined no matter what, my nodejs project is currently running from localhost

here is my index.js:

// Import essential libraries 
const express = require('express');
const app = express();
const path = require('path');
const router = express.Router();


app.get('/test', (req, res) => {

    const { Client, LocalAuth } = require('whatsapp-web.js');

    const client = new Client({
        authStrategy: new LocalAuth({ clientId: "1234" })
    });

    client.on('authenticated', (session) => {

        console.log('Client > On > Authenticated');
        console.log('Client > On > Authenticated > Session Object: ' + JSON.stringify(session, null, 2));

        // Save the session object however you prefer.
        // Convert it to json, save it to a file, store it in a database...

    });

    client.on('qr', (qr) => {

        console.log('Client > On > QR Code');
        var qr_img = require('qr-image');

        // Generate and scan this code with your phone
        try {
            var img = qr_img.image(qr);
            res.writeHead(200, {'Content-Type': 'image/png'});
            img.pipe(res);
        } catch (e) {
            res.writeHead(414, {'Content-Type': 'text/html'});
            res.end('<h1>414 Request-URI Too Large</h1>');
        }

        console.log('Client > On > QR Code > Received');
    });

    client.on('ready', () => {
        console.log('Client > On > Ready');
    });

    client.on('message', msg => {
        console.log('Client > On > Message');
    });

    client.initialize();

})

//add the router 
app.use('/', router);
app.listen(process.env.port || 3001);

console.log('Running at Port 3001');

Expected behavior

session object not undefined

Steps to Reproduce the Bug or Issue

1. copy my code
2. paste into a new node.js project index.js file
3. run node index.js

Relevant Code

No response

Browser Type

Google Chrome

WhatsApp Account Type

Standard

Does your WhatsApp account have multidevice enabled?

Yes, I am using Multi Device

Environment

Windows 11

Additional context

No response

[jeremyandes]

Hi there! It's not a bug, it's because you're using LocalAuth strategy and saving your session files inside your selected path. According to wwebjs.dev - LocalAuth documentation, you need a persistent file system to save your session and restore it, the authenticated event won't return your session. Also, almost all (maybe all) whatsapp numbers at today are using multidevice. So, if you were looking at LegacySessionAuth strategy to save your session as JSON object, it won't work at all.

I would recommend you to try RemoteAuth strategy, using a free MongoDB cluster.

import { MongoStore } from 'wwebjs-mongo';
import mongoose from 'mongoose';
import dotenv from 'dotenv';
dotenv.config();

await mongoose.connect(process.env.MONGODB_URI!);
const store = new MongoStore({ mongoose });
const client = new Client({
    authStrategy: new RemoteAuth({
        store,
        backupSyncIntervalMs: 300000, // in ms, minimum interval starts at 60000
        clientId: `your-client-id`, // I would say it's required
        dataPath: './your_sessions_path/', // optional
    }),
    restartOnAuthFail: true, // optional
    puppeteer: {
        headless: true,
        args: [
            '--no-sandbox',
            // other node args
        ],
    },
});
client.initialize();

[RC047]

Getting session in event client.on('authenticated') is only available if you using LegacySessionAuth()

[ShanthiniMM]

Hi, I am trying to send a message after the client is ready. The client is not getting ready for 2 minutes. But it is active on my mobile, not able to send messages. Kindly help me. Thanks in advance.

[Oladapodaniel]

Hi, I am trying to send a message after the client is ready. The client is not getting ready for 2 minutes. But it is active on my mobile, not able to send messages. Kindly help me. Thanks in advance.

Try to update the lib version, you are probably running on an old version