I had asked the same question on the blog post, and the author responded there saying the patches were not integrated into vanilla nginx yet, only "upstreamed"

I had asked the same question on the blog post, and the author responded there saying the patches were not integrated into vanilla nginx yet, only "upstreamed" to the nginx-devel mailing list in December, 2015. https://blog.cloudflare.com/hpack-the-silent-killer-feature-of-http-2/ https://blog.cloudflare.com/hpack-the-silent-killer-feature-...