Join meeting timeout. No permission

Meeting SDK Web
1

I am trying to join a zoom meeting that I have created. While joining, it shows a popup - Join Meeting timeout: No permission. I think the problem is that I am generating the wrong signature. Can someone help me out with this?

{
method: ‘join’,
status: ‘false’,
result: ‘No permission’,
errorMessage: ‘No permssion.’,
errorCode: 3713
}

I am working with SDK version 2.4.5

import React from ‘react’
import { useEffect } from ‘react’;
import { ZoomMtg } from ‘@zoomus/websdk’;
const KJUR = require(‘jsrsasign’)

var apiKey = ‘[REDACTED]’
var apiSecret = ‘[REDACTED]’
var meetingNumber = ‘[REDACTED]’
var leaveUrl = ‘http://localhost:3000’;
var userName = ‘WebSDK’
var userEmail = ‘test@gmail.com’;
var passWord = ‘y5gjZB’;
var signature = ‘’
var role = 0;

function generateSignature(sdkKey, sdkSecret, meetingNumber, role) {

const iat = Math.round((new Date().getTime() - 30000) / 1000)
const exp = iat + 60 * 60 * 2
const oHeader = { alg: ‘HS256’, typ: ‘JWT’ }

const oPayload = {
sdkKey: sdkKey,
mn: meetingNumber,
role: role,
iat: iat,
exp: exp,
appKey: sdkKey,
tokenExp: iat + 60 * 60 * 2
}

const sHeader = JSON.stringify(oHeader)
const sPayload = JSON.stringify(oPayload)
const sdkJWT = KJUR.jws.JWS.sign(‘HS256’, sHeader, sPayload, sdkSecret)
return sdkJWT
}
signature = generateSignature(apiKey, apiSecret, meetingNumber, role);
console.log(signature)

const Zoom = () => {

useEffect(() => {
    showZoomDiv();
    ZoomMtg.setZoomJSLib('https://source.zoom.us/2.4.5/lib', '/av');
    ZoomMtg.preLoadWasm();
    ZoomMtg.prepareJssdk();
    initiateMeet();
}, [])

const showZoomDiv = () => {
    document.getElementById("zmmtg-root").style.display = "block";
}

const initiateMeet = () => {
    ZoomMtg.init({
        leaveUrl: leaveUrl,
        isSupportAV: true,
        success: (success) => {
            console.log(success)

            ZoomMtg.join({
                signature: signature,
                meetingNumber: meetingNumber,
                userName: userName,
                apiKey: apiKey,
                userEmail: userEmail,
                passWord: passWord,
                success: (success) => {
                    console.log(success)
                },
                error: (error) => {
                    console.log(error)
                }
            })
        },
        error: (error) => {
            console.log(error)
        }
    })
}

return (
    <div className='App'>Zoom</div>
)

}

export default Zoom

Screenshots

Device (please complete the following information):

  • Device: HP Pavillon Laptop
  • OS: Windows 10
  • Browser: Chrome
  • Browser Version 102.0.5005.115
2

Hi, @chaitanyasondur.

Welcome to the Developer Forum. Based on the snippet, it looks like the signature is being generated correctly. As a sanity check, have you validated the signature is correct? If not, you can do so at JWT.io. Please see this post for guidance on debugging your signature here :

3

Thank you so much for your quick response @donte.zoom. I debugged the signature and the payload fields were correct according to me. But it shows an “Invalid Signature” error at the bottom. I have also attached the snap. Kindly help me out with this. Thanks.

[REDACTED PII }

4

@chaitanyasondur,

Thanks for sharing that screenshot, @chaitanyasondur! To align with security best practices, we ask that you remove any Personal Identifiable Information when posting in the Forum. That aside, based on the screenshot, the signature looks correct. May I ask which SDK are you working with? (i.e, React, VUE, Vanilla JS) ? In the meantime, I’d next generate a signature using the Zoom Meeting SDK Sample Signature Node.js app and compare your function signature output against the Sample App.

5

Thank you @donte.zoom. I am working with the React SDK.

6

@chaitanyasondur.

You’re welcome! Have you tried to generate a signature using the Zoom Meeting SDK Sample Signature Node.js app and compare your function signature output against the Sample App ?

7

Hello @donte.zoom, I tried using meetingsdk-sample-signature-node.js. The signature I received was almost identical to the previous one. The role, SDK key, app key, mn were all the same.

While using the server to generate the signature, I got a different error: Uncaught TypeError: Cannot read properties of undefined (reading 'toString') at A (bundle.js:35671:68).

The error occurred in signature: "function" !== typeof e.signature ? e.signature.toString() : e.signature, in bundle.js file.

8

@chaitanyasondur ,

That error appears to be in your bundle.js file. It seems the root cause is with your implementation. As a sanity check, I’d recommend performing an isolated test using the Sample SDK
and meetingsdk-sample-signature-node.js outside of your codebase? This will help to isolate what the root cause of the error you are receiving in your implementation.

9

hi,
for your signature you use the SDK JWT, but for join you use JWT - two differnet app types

wrong property:

ZoomMtg.join({
   signature: signature,
   apiKey: key,

correct property:

ZoomMtg.join({
   signature: signature,
   sdkKey: key,

line 73:

Jürgen

10

Thank you for sharing your insight @j.schoenemeyer!

11

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