server

type Client struct {
	Hub              *Hub
	Conn             *ws.Conn
	PingInterval     time.Duration
	PongWait         time.Duration
	ReadSizeLimit    int64
	WriteMessageType int
	MessagesToSend   chan []byte
	ValidateMessage  func(msg []byte, client *Client) (bool, []byte)
}

type Hub struct {
	Clients     map[*Client]bool
	Subscribe   chan *Client
	Unsubscribe chan *Client
}