首页 / API 参考 / StockSharp.Fix.Native FixHeartbeat StockSharp.Fix.Native Data for Heartbeat FIX message. 实现: IEquatable<FixHeartbeat> 构造函数 FixHeartbeat(string) Data for Heartbeat FIX message. TestReqId Test request identifier. 属性 TestReqId : string Test request identifier.