Go实战--golang中使用echo框架中的HTTP/2、Server Push(labstack/echo、golang.org/x/net/http2)

生命不止，继续 go go go !!!

继续echo web框架，今天搞一下http2。

HTTP2

What is HTTP/2?
HTTP/2 is a replacement for how HTTP is expressed “on the wire.” It is not a ground-up rewrite of the protocol; HTTP methods, status codes and semantics are the same, and it should be possible to use the same APIs as HTTP/1.x (possibly with some small additions) to represent the protocol.

The focus of the protocol is on performance; specifically, end-user perceived latency, network and server resource usage. One major goal is to allow the use of a single connection from browsers to a Web site.

新的二进制格式（Binary Format）
HTTP1.x的解析是基于文本。基于文本协议的格式解析存在天然缺陷，文本的表现形式有多样性，要做到健壮性考虑的场景必然很多，二进制则不同，只认0和1的组合。基于这种考虑HTTP2.0的协议解析决定采用二进制格式，实现方便且健壮。

多路复用（MultiPlexing）
即连接共享，即每一个request都是是用作连接共享机制的。一个request