type CallParams struct {
	Method   string
	EndPoint string
	Params   interface{}
	Fields   []string
}

type Connector struct {
	Params     interface{} //request params
	Required   []string    //required fields
	Url        string      //main, or test api url
	EndPoint   string      //api endpoint method
	ApiKey     string      //user api key
	ApiSecret  string      //user api secret
	RecvWindow string      //recvwindow= 5000 default
	Signature  string      //user signature
	// contains filtered or unexported fields
}

type Response struct {
	RetCode    int         `json:"retCode"`
	RetMsg     string      `json:"retMsg"`
	Result     interface{} `json:"result"`
	RetExtInfo interface{} `json:"retExtInfo"`
	Time       int         `json:"time"`
}