Ask HN: Any recent alternative to “”http the definitive guide“

As obvious as it is, I want to remind everyone to just read through the relevant RFCs as a primer before diving into more usecase'y or best practices information.

It's not quite as expansive as HTTP: The Definitive Guide, but I highly recommend High Performance Browser Networking* by Ilya Grigorik. Very well-written, with good coverage of not only HTTP, but only WebSockets and WebRTC. I highly recommend it.

*High Performance Browser Networking: What every web developer should know about networking and web performance 1st Edition

The book is outdated but still has a tone of useful information ant it fully covers HTTP 1.1, which is still the most up-to-date version of HTTP protocol. According to W3Techs only 1.2% of all websites support HTTP/2 (August 2015).