[undertow-dev] Proxy Protocol/Layer-4 load balancing/AWS ELB

[Christopher Smith]

I think ELB constitutes pretty wide usage. ;-)

People do tend to use the layer-7 load balancing, but given undertow's
extensive support for http/2 & spdy, the advantages of using layer-4 load
balancing are significant. I agree it is a very straightforward
implementation. You mostly just parse one line before handing off the logic
to some other handler. I'm not familiar with undertow's code base, but I'd
be happy to work with someone on it.

--Chris

On Tue, Nov 3, 2015 at 3:59 AM, Jason T. Greene <jason.greene at redhat.com>
wrote:

>
>
> Sent from my iPhone
>
> On Nov 2, 2015, at 10:24 PM, Christopher Smith <cbsmith at gmail.com> wrote:
>
> ELB supports layer-4 load balancing, which would just multiplex inbound
> TCP connections (with an added bonus of offloading TLS), but I'm concerned
> about losing client IP addresses. ELB actually has a way to address this
> with HAProxy's PROXY protocol:
> http://www.haproxy.org/download/1.6/doc/proxy-protocol.txt
>
> However, I haven't found a place for setting up the PROXY protocol support
> in undertow. Has anyone done this? Is there a way I should be going about
> it?
>
>
> We should probably add support for haproxy's protocol if it has wide usage
> like this. It looks fairly straightforward.
>
> -Jason
>



-- 
Chris
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