http2

• http2 upgrade
• header compression and decompression
• stream and multiplexing
  • flow control
  • request prioritization
• server push
• faq

知识点

http/1.x 的问题

• domain sharding
• head of line blocking
• 多个 tcp 连接
• Header 不像 body，它不会被压缩。

http2 的功能：(nghttp2 分析请求头信息)

• is binary, instead of textual
• is fully multiplexed, instead of ordered and blocking
• can therefore use one connection for parallelism
• uses header compression to reduce overhead
• allows servers to “push” responses proactively into client caches

http2 upgrade

header compression and decompression

• static Huffman code(曾被攻击，后引入了 HPACK 算法)
• HPACK

stream and multiplexing

flow control

request prioritization

server push

只限同域资源推送

资料学习

• https://hpbn.co/http2
• https://httpwg.org/specs/rfc7540.html
• https://http2.github.io

faq

• faq