Hi there,
actually, i am in a migration project from varnish 3 to varnish 4.0, and i was
confused about the x-forwarded-for header settings in varnish 4.0:
in the official doc, it says that x-forwarded-for is automatically set, like it
is obvious in the source code:
https://github.com/varnishcache/varnish-cache/blob/4.0/bin/varnishd/cache/cache_req_fsm.c#L724
But a lot of people are adding a snippet for vcl_recv like
if (req.restarts == 0) {
if (req.http.X-Forwarded-For) {
set req.http.X-Forwarded-For = req.http.X-Forwarded-For + ", " +
client.ip;
} else {
set req.http.X-Forwarded-For = client.ip;
}
}
Which, from my point of view, is the same implementation as it already should
exist as the docs say. I currently do not have a LB/proxy infrastructure to
test it, so maybe someone can clear this up, if x-forwarded-for is
automatically set by varnish before executing the vcl_recv from my custom
.vcl-file, or if the given snippet is required to set the real user ip for
x-forwarded-for.
Thank you very much!
Greetings, Niklas
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