outgoingMessage.pipe()

重写了继承自旧版 Stream 类的 stream.pipe() 方法，而 Stream 是 http.OutgoingMessage 的父类。

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

调用此方法会抛出 Error，因为 outgoingMessage 是一个只写流。

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