http-2 1.1.0 has been released.

https://github.com/igrigorik/http-2

Pure Ruby, framework and transport agnostic, implementation of HTTP/2 protocol and HPACK header compression with support for:

• Binary framing parsing and encoding
• Stream multiplexing and prioritization
• Connection and stream flow control
• Header compression and server push
• Connection and stream management
• And more… see API docs

Protocol specifications:

• Hypertext Transfer Protocol Version 2 (RFC 7540)
• HPACK: Header Compression for HTTP/2 (RFC 7541)

Here are the updates since the last release:

1.1.0

Several changes which improved performance for the common cases. A few highlights:

• Opting into ruby 3.4 features when possible (such as String#append_as_bytes instead of String#<<)
• reducing string and array allocations on several places (connection management, frame generation, hpack header compression, etc)
• “streams recently closed” not having to regenerate the list when not necessary

1.0.2 Improvements

• Freezing static tables (used for header huffman coding) correctly. This makes them shareable, which makes http-2 usable across ractors.
• Moved buffer helpers from String refinements into mixins. Refinements impose a relevant performance penalty, unfortunately, despite its cleaner API.

1.0.1 Improvements

• discard closed streams from the connection (reduces memory consumption).

Bugfixes

• allow RST_STREAM frames to be ignored on closed streams.
• prevent already closed streams from being initialized again.