Webhook URL validation failing with cURL timeout through ngrok

• Hello RingCentral Team,

  I’m trying to set up a webhook for my Laravel application running locally with ngrok. My setup:

• Laravel webhook route: /ring-central/webhook

• Ngrok URL: https://photostatic-seemingly-jefferey.ngrok-free.dev

• Ngrok is forwarding to http://127.0.0.1:8000

• Laravel handles GET, POST, and HEAD requests properly.

Thanks in advance!

I suspect this may be related to RingCentral reaching free ngrok tunnels. Could you advise on:

Any recommended configurations for local testing with ngrok?

Timeout adjustments for webhook validation?

Any restrictions on HEAD requests for free tunnels?

Code snippet for webhook handling:

if ($request->isMethod('get') || $request->isMethod('head')) { return response('Okay', 200); } $validationToken = $request->header('X-RingCentral-Validation-Token'); if ($validationToken) { return response($validationToken, 200)->header('Content-Type', 'text/plain'); } if ($request->isMethod('post')) { // Process incoming events return response()->json(['status' => 'success'], 200); } return response()->json(['error' => 'Method Not Allowed'], 405);

When RingCentral tries to validate the webhook, I get this error in my logs:

Webhook URL is not reachable: cURL error 28: Operation timed out after 5000 milliseconds with 0 bytes received

I verified that the ngrok URL works in a browser.

GET and POST requests from Postman work fine.

Only HEAD requests now correctly return 200.