客户端意外断开连接后，服务器未针对心跳超时关闭websocket连接 #83
Description
客户端意外断开连接后，服务器未针对心跳超时关闭websocket连接，导致_chargePointStatusDict 还存储了状态数据，而且此时通过api发送websocket消息会出现异常
private static Dictionary<string, ChargePointStatus> _chargePointStatusDict = new Dictionary<string, ChargePointStatus>();