Unfortunately what I consider the most useful feature of HTTP/2, server
push, isn't currently included in nginx's implementation.

On Fri, 13 May 2016 17:33 Robie Basak, <robie.ba...@ubuntu.com> wrote:

> Hi Mark,
>
> On Tue, May 10, 2016 at 07:59:02AM -0700, Mark Shuttleworth wrote:
> > Oh, I would think we definitely want to enable http2 in Xenial by
> > default! Jay can you take care of that?
>
> HTTP/2 support in Apache is still considered experimental by
> upstream[1], so we didn't enable it in the LTS under security team
> guidance[2]. Support is available in nginx though, as that went stable
> in time.
>
> We intend to enable HTTP/2 support for Apache in an SRU as soon as
> upstream consider it stable and no longer experimental.
>
> The concern is that both implementation and configuration directives may
> change, and we can't realistically follow this in the LTS timeframe
> without breaking production users. This in turn would compromise
> security since upstream security patches will no longer apply and be
> tough to backport.
>
> A weighing up of regression risk to users will need to influence any
> future SRU decision to enable support, of course.
>
> Robie
>
> [1] https://httpd.apache.org/docs/2.4/mod/mod_http2.html
> [2]
> https://wiki.ubuntu.com/XenialXerus/ReleaseNotes#HTTP.2F2_support_in_Apache_httpd
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