var wsUri = "wss://devicefarm-interactive.us-west-2.amazonaws.com/?X-Amz-Date=*&X-Amz-Credential=*&X-Amz-Algorithm=*&X-Amz-SignedHeaders=host&X-Amz-Signature=*&X-Amz-Security-Token=*";
var websocket = new WebSocket(wsUri);
websocket.send('ping');