背景
最后更新于:2022-04-01 20:52:20
# 1. 背景
这篇文档会从技术和协议层面介绍http2。文档起源于2014年4月我在斯德哥尔摩做了一次相关的演讲,在那之后我对演讲内容的细节进行了一些解释和补充,从而写出了这篇文档。
正式版http2规格标准叫做RFC 7540,发布于2015年5月15日:[http://www.rfc-editor.org/rfc/rfc7540.txt](http://www.rfc-editor.org/rfc/rfc7540.txt)
如果你有在这篇文章中发现任何我的失误造成的错误或疏漏,请帮我指正。我会在后续版本中修改。
为了让阅读体验更流畅,在这篇文章中我会使用“http2”来指代这一新协议,但请记住该协议的正式名字是HTTP/2。
_这篇文档版本为1.12,发布于2015年5月21日。_
## 1.1. 关于作者
我的名字叫做Daniel Stenberg,在Mozilla工作。在过去20年,我一直致力于开源事业,参与了多个网络方面的项目。可能我最广为人知的身份是curl和libcurl的首席开发者。同时,我也参与了IETF HTTPbis工作组多年,工作在HTTP 1.1和http2标准化的一线.
- Email: daniel@haxx.se
- Twitter: [@bagder](https://twitter.com/bagder)
- Web: [daniel.haxx.se](http://daniel.haxx.se/)
- Blog: [daniel.haxx.se/blog](http://daniel.haxx.se/blog/)
## 1.2. 帮助我!
如果你在该文档里面发现任何错误、疏漏,请发送给我一份相关段落更改后的版本,我会进行修正并且注明所有对文档有贡献的人!希望这份文档能越来越好。
这篇文档可以在[http://daniel.haxx.se/http2](http://daniel.haxx.se/http2)下载。
## 1.3. 许可证
这篇文档基于Createive Commons Attribution 4.0发布: [http://creativecommons.org/licenses/by/4.0/](http://creativecommons.org/licenses/by/4.0/)
![](https://docs.gechiui.com/gc-content/uploads/sites/kancloud/2015-08-09_55c75bc13669c.png)
## 1.4. 文档历史
该文档的第一版发布于2014年4月25日。下面是最近主要改动的更新历史。
**Version 1.12:**
- 1.1: HTTP/2 is now in an official RFC
- 6.5.1: link to the HPACK RFC
- 9.1: mention the Firefox 36+ config switch for http2
- 12.1: Added section about QUIC
**Version 1.11:**
- Lots of language improvements mostly pointed out by friendly contributors
- 8.3.1: mention nginx and Apache httpd specific acitivities
**Version 1.10:**
- 1: the protocol has been “okayed”
- 4.1: refreshed the wording since 2014 is last year
- front: added image and call it “http2 explained” there, fied link
- 1.4: added document history section
- many spelling and grammar mistakes corrected
- 14: added thanks to bug reporters
- 2.4: (better) labels for the HTTP growth graph
- 6.3: corrected the wagon order in the multiplexed train
- 6.5.1: HPACK draft-12
**Version 1.9: February 11, 2015**
- Updated to HTTP/2 draft-17 and HPACK draft-11
- Added section "10. http2 in Chromium" (== one page longer now)
- Lots of spell fies
- At 30 implementations now
- 8.5: added some current usage numbers
- 8.3: mention internet explorer too
- 8.3.1 "missing implementations" added
- 8.4.3: mention that TLS also increases success rate
**Version 1.8: January 15th, 2015**
- Compressed the images better, leading to a much smaller PDF
- Updated to draft-16 and hpack-10
- Replaced several images
- Linkifid many URLs
- Added a few questions in 8.4
- Mentions IETF Last Call
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