限价委托和市价委托撤销所有订单撤销所有订单 POST: /v1/future-u/trade/order/cancel-all Content-Type: application/x-www-form-urlencoded && application/json Parameters参数数据类型是否必须默认值描述取值范围symbolStringtrueN/A交易对(传空字符串撤销所有交易对订单)限流规则200/s/apikeyResponse{ "msgInfo": { "code": "", "msg": "" }, "msg": "", "data": true, "code": 200}