Which parts of HTTP/2 are stateful?

问题

Unlike stateless HTTP/1.0, HTTP/2 has stateful components.

These parts appear stateful:

• opportunistic encryption
• framing layer
• header blocks

This part appears to be stateless:

• application layer

Are there any other parts of HTTP/2 are stateful?

来源：https://stackoverflow.com/questions/33682693/which-parts-of-http-2-are-stateful