I’m starting building the Calling feature of WhatsApp Cloud API with Python, and my goal so far is to implement only the User-initiated Calls: when users call my WhatsApp app’s number, they will hear a static audiomessage. The WhatsApp Calling API spec describes quite comprehensively the call establishing messages flow but does not explain how to establish the WebRTC connection. So wanted to get help with the next: what solution to use for streaming the static audio message to the WhatsApp call’s WebRTC connection? how to implement the WebRTC connection setup on my app’s side when the call request from the user is received? how to derive and include the WebRTC connection parameters into the call pre-acceptance and the call acceptance requests sent by my app? Continue reading...
