public override async Task ReceiveAsync(WebSocket socket, WebSocketReceiveResult result, byte[] buffer)
        {
            var socketId = WebSocketConnectionManager.GetId(socket);
            var message  = $"{socketId} said: {Encoding.UTF8.GetString(buffer, 0, result.Count)}";

            await SendMessageToAllAsync(message);
        }
        public override async Task OnConnected(WebSocket socket)
        {
            await base.OnConnected(socket);

            var socketId = WebSocketConnectionManager.GetId(socket);

            await SendMessageToAllAsync($"{socketId} is now connected");
        }