我们将首先从一个更新过的层次结构图开始，它表明了哪个类提供了对HTTP连接的支持。
We'll start with an updated hierarchy diagram that indicates which class provides support for HTTP connections.
我们将首先从一个更新过的层次结构图开始，它表明了哪个类提供了对HTTP连接的支持。
We'll start with an updated hierarchy diagram that indicates which class provides support for HTTP connections.
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