public void Execute()
            {
                if (!lobbyModel.HasJoinedIntoRoom.Value)
                {
                    Logger.LogError("Not joined into a room");
                    return;
                }

                battleService.IsConnected.Where(v => v).Take(1).Subscribe(_ => OnBattleConnect());

                var room        = lobbyModel.JoinedRoom.Value;
                var baseUri     = new Uri(room.BattleServerBaseUri);
                var relativeUri = string.Format("rooms/{0}?room_key={1}", room.Id, room.RoomKey);

                battleService.Connect(new Uri(baseUri, relativeUri).ToString());
            }