Proper structure - Twilio Callback

Question

I have been having some success sending sms messages with Twilio via curl. Now I am wanting to implement the callback url to track the status of the message.. I cannot seem to get the call back to work

I have tried encoding it in JSON and also appending it as parameter and I havent been able to have any success.. Any help is appreciated

Answer 1

It's not JSON, it is sent as urlencoded (application/x-www-form-urlencoded).

Where do I find the specifications for inbound HTTP requests to my server?