HTTP/2 -- is support required on the back end? (3 replies)

When http/2 support lands in haproxy, will http/2 support also be
required on the back end to take advantage of it?

I'm hoping that I can leverage http/2 without immediate support on the
back end. I would expect that the LAN connection between haproxy and
the back end servers will be fast enough that the single http/2
connection can be used on the Internet-facing side with multiple
http/1.1 connections on the back end, but I don't know if that kind of
isolation will be possible. We do have plans to upgrade the back end to
support http/2, but that may happen a lot slower than I would like.

The back end servers for haproxy are Apache, with Tomcat behind those,
so I have similar concerns there. Apache has http/2 support now, but
Tomcat is lagging behind.

Thanks,
Shawn