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？修改 "别"字 标示 为 表示 #39

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？修改 "别"字 标示 为 表示 #39

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2 changes: 1 addition & 1 deletion source/basic/network/HTTP.md
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Expand Up @@ -198,7 +198,7 @@ Transfer-Encoding 是一个用来标示 HTTP 报文传输格式的头部值。

**注意：**

* chunked 和 multipart 两个名词在意义上有类似的地方，不过在 HTTP 协议当中这两个概念则不是一个类别的。multipart 是一种 Content-Type，标示 HTTP 报文内容的类型，而 chunked 是一种传输格式，标示报头将以何种方式进行传输。
* chunked 和 multipart 两个名词在意义上有类似的地方，不过在 HTTP 协议当中这两个概念则不是一个类别的。multipart 是一种 Content-Type，表示 HTTP 报文内容的类型，而 chunked 是一种传输格式，表示报头将以何种方式进行传输。
* chunked 传输不能事先知道内容的长度，只能靠最后的空 chunk 块来判断，因此对于下载请求来说，是没有办法实现进度的。在浏览器和下载工具中，偶尔我们也会看到有些文件是看不到下载进度的，即采用 chunked 方式进行下载。
* chunked 的优势在于，服务器端可以边生成内容边发送，无需事先生成全部的内容。HTTP/2 不支持 Transfer-Encoding: chunked，因为 HTTP/2 有自己的 streaming 传输方式（Source：[MDN - Transfer-Encoding](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Transfer-Encoding)）。

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