If there was no callback function provided, the send function blocks and waits until the server response arrives, or else it raises HTTP errors.

如果没有提供回调函数，那么send函数阻塞，一直等到服务器响应到达，或者引发HTTP错误。

youdao

But they make sure that the business logic is invoked, that the controller logic doesn't detect any errors, and that the right HTTP response is achieved.

但是它们可以保证调用了业务逻辑，保证控制器逻辑没有检测到任何错误，并保证得到了正确的HTTP响应。

youdao

Not only are the necessary nodes created, but the HTTP URL information contained in the WSDL file is also copied, thereby eliminating transcription errors.

不仅创建了一些所需的节点，而且还复制了 WSDL 文件中包含的 HTTP URL 信息，从而避免了抄写过程中的错误。

youdao