stream attribute的意思|示意

If that is null, then the encoding attribute of the DOM stream to be written is used.

如果该设置为空，那么使用将要写入的dom流的编码属性。

We use the Request_Content attribute of the request to get a handle on the actual XML sent by the client and to pipe it to the stream object.

我们使用请求的Request_Content属性来获得由客户机发送的实际XML的句柄，并将其输送到stream对象。

The receiving client on the right receives this XML stream and responds with an XML stream response (in this case, using the from attribute).

右边的接收客户端接收xml流并使用xml流响应(在这个例子中，使用from属性)进行回应。