HTTP/2 简介 - Jiajun的编程随想



HTTP/2 简介 - Jiajun的编程随想

上一节我们看到了每个frame的定义中都有31bit用来标识当前frame所在stream的id。那么stream是个什么鬼？stream是一个抽象概念， 因为HTTP/2把原本HTTP/1中一个请求中的头部和body打散了，分成了HEADERS和DATA两个frame。那当服务器收到一堆的frame之后，他如何 知道哪个frame和哪个frame是一起的，组合起来是一个完整的请求呢？所以我们需要stream这个抽象概念，而且由于一个HTTP/2连接可以 同时传输多个stream，所以我们可以通过下面的图片来理解stream：


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