outgoingMessage.pipe()

覆盖继承自旧版的 Stream 类（http.OutgoingMessage 的父类）的 stream.pipe() 方法。

调用此方法将抛出 Error，因为 outgoingMessage 是只写流。

Overrides the stream.pipe() method inherited from the legacy Stream class which is the parent class of http.OutgoingMessage.

Calling this method will throw an Error because outgoingMessage is a write-only stream.