```go //监听续租情况 func (this *ServiceReg) ListenLeaseRespChan() { for { select { case leaseKeepResp := <-this.keepAliveChan: if leaseKeepResp == nil { log.Error("已经关闭续租功能") return } else { //log.Info("续租成功") } } } } ``` 只是做到通知,假如A服务不提供了,grpc还是有可能调用到A这台服务器是吗,这里是否还要完善