Sketches can be found herre: https://www.figma.com/board/y79q33tQc60CvPH8OGqBSD/Deckster?node-id=0-1&t=28XqJwUIr7WQSmtB-1

Communication happens over 2 websockets: 1 action socket (request/response) 1 notification socket (asynchronous/push)

Connection handshake are done in 2 parts:

• join (establish action socket)
• finish join (establish notification socket)

Disconnecting initiated by client:

• Client sends close message on action socket with message "Client disconnected" (important)
• Server sends close message on notification socket with message "Client disconnected"
• Client sends close response on notification socket
• Server sends close response on action socket

Disconnecting initiated by server:

• Server sends close message on notification socket with message "Server disconnected" (important)
• Client sends close message on action socket with message "Server disconnected"
• Server sends close response on action socket
• Client sends close response on notification socket