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http2 explained

This document describes http2 at a technical and protocol level. Background, the protocol, the implementations and the future.

Download the PDF (6.8 MB, 30 pages)

This is a "living document" in the sense that I keep posting updates, and I care about and value feedback, questions and comments I get about it. Alas, over time this document improves thanks to a joint effort.

Recent Changes

Version 1.7: November 18th, 2014

  • Updated to draft-15 details
  • Minor edits

Version 1.6: August 13th, 2014

  • Updated to draft-14 details
  • Firefox Nightly runs with it by default
  • clarified NPN details

Translations

Report problems or errors in the document?

If you want to comment or help to fix errors in this document, please email daniel-http2@haxx.se or even better: submit an issue.

Source

The full document is available in libreoffice ODT format from github.

Sample stream

Outdated: curl-h2-12-nghttp2-org.pcapng is a Wireshark capture of curl talking http2 draft-12 in plain text with nghttp2.org.

Presentation

The http2 presentation version of the information. Updated on June 12th 2014. It is also available in source format in the github repo.