个字节的目标地址表示接收方。
4 bytes of destination address to notify who is it going to.
个字节的源地址表示发送方。
换句话说,“ to ”地址表示发送请求的目标位置。
In other words, the "to" address indicates where the request should be sent.
Instead if we want this pointer to represent the address of something in as much as it points at that address let's just draw an arrow.
如果我们想要让这个指针表示,数据的地址,它指向的地址,我用一个箭头表示。
This just means hexadecimal notation, which we'll come back to before long so really it just means it's returning the 0 address zero.
这表示的是16进制,我们等下还会讨论,表示的是返回,地址。
One says get the address, one says go there.
一个表示获得地址,一个是定位到那个地方。
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