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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