Behind a network proxy :"invalid IP address (HTTP 400)"

[meepmeep]

Hi

I’m behind a network proxy that exposes the external IP address of the egress proxy, along with an "ORG_IP : <my.real.ip.address>"

When trying to upload something on Plik, I get this message : "invalid IP address (HTTP 400)"

And this in console when opening the web page :

[06/29/2026 14:39:22][DEBUG ] invalid IP address -- 400

In configuration file, I have :

SourceIpHeader = "X-FORWARDED-FOR"
(and I tried with : X-Forwarded-For)

From the client side, it looks like there are multiple IP addresses in the X-Forwarded-For header :
"X-Forwarded-For": [
"86.x.y.z, 24.a.b.c, 66.d.e.f"

Do you have any idea how this can be fixed?

[equinoxefr]

Hi,

In the code they ask for a unique IP in the header, not an array, that's why it failed with error 400.

I have a dirty workaround that's working for me: use X-Real-IP instead of X-Forwarded-For.
You can configure the reverse proxy to set the correct IP, eg for haproxy you have to set this in frontend section:

http-request set-header X-Real-IP %[src]