When we are validating the webhook endpoint in PHP it throws the error, the return type is invalid but we are returning the correct JSON object as per the endpoint validation documentation.
We are using below PHP code to validate the webhook endpoint URL:-
$body = file_get_contents(‘php://input’);
Please help us regarding the above issue.
Also, we have checked the code multiple times as per the webhook validation documentation
Hi @marc.moreno
console.log(req.body)
// construct the message string
const message = `v0:${req.headers['x-zm-request-timestamp']}:${JSON.stringify(req.body)}`
const hashForVerify = crypto.createHmac('sha256', process.env.ZOOM_WEBHOOK_SECRET_TOKEN).update(message).digest('hex')
// hash the message string with your Webhook Secret Token and prepend the version semantic
const signature = `v0=${hashForVerify}`
// you validating the request came from Zoom https://marketplace.zoom.us/docs/api-reference/webhook-reference#notification-structure
if (req.headers['x-zm-signature'] === signature) {
// Zoom validating you control the webhook endpoint https://marketplace.zoom.us/docs/api-reference/webhook-reference#validate-webhook-endpoint
if(req.body.event === 'endpoint.url_validation') {
const hashForValidate = crypto.createHmac('sha256', process.env.ZOOM_WEBHOOK_SECRET_TOKEN).update(req.body.payload.plainToken).digest('hex')
response = {
message: {
plainToken: req.body.payload.plainToken,
encryptedToken: hashForValidate
It looks like you are probably missing the validating the signature step
Hi Elisa,
Thank you. as per my developer “=> We have validated the signature as Zoom support suggested, But we are getting the same error when validating the webhook, So kindly ask to Zoom support team why we are getting the “Invalid return type” error” could you please advise? Thank you!
Thanks @marc.moreno
Thank you so much. I will tell them that.
1 Like
system
September 22, 2023, 5:58pm
7
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