I am trying to code an application that can send instant messages on web whatsapp. However, I could not connect to the web socket of whatsapp.

How can I connect to this socket with Javascript? Also, I couldn't parse the messages because they are in hex. I couldn't understand what kind of data I should send.

https://developer.mozilla.org/en-US/docs/Web/API/WebSockets_API/Writing_WebSocket_client_applications

This is how I get a socket closed error when I try to connect. I could not understand what kind of data I should send and how I should connect to the socket. I have never worked with socket before. Can you guide me?