无效的异步远程过程调用句柄。

The remote procedure call was cancelled.

youdao

每个方法都提供了一个回调对象，这样就可以在完成远程过程调用后收到异步通知。

Each method provides a callback object so that you are notified asynchronously when the remote procedure call is complete.

youdao

这个函数使用asyncrequest类发送异步请求，实现远程过程调用。

This function raises the remote procedure call invocation using the AsyncRequest class to send asynchronous requests.

youdao