foreach (var dic in sockets)
                {
                    if (dic.Value.Poll(1000, SelectMode.SelectRead))
                    {
                        dic.Value.Close();//关闭socket
                        sockets.TryRemove(dic.Key, out Socket socket);

                        _logger.Warn($"IP:{dic.Key},客户端socket连接断开;");

                        continue;
                    }

                    _logger.Info($"IP:{dic.Key},客户端socket连接正常;");
                }