If successful, API requests will return an HTTP 101 Switching Protocols code in the response headers:
101 Switching Protocols
Code HTTP/1.1 101 Switching Protocols Connection: upgrade Upgrade: websocket Sec-WebSocket-Accept: wEV5o5orKGO27qATSTLczquY3EH=
HTTP/1.1 101 Switching Protocols Connection: upgrade Upgrade: websocket Sec-WebSocket-Accept: wEV5o5orKGO27qATSTLczquY3EH=
Then the HTTP connection will be replaced by a WebSocket connection. All API responses, both public and private, will be sent over the WebSocket connection.