Pixelstick 4.0 Web UI does does not work when behind FPP proxy

[patdelaney]

This may be a dupe of #226 esp avec rasberry et fpp falcomplay

ESPixelStick Firmware Version
Unify Branch
Hardware Version
esp8266 and ESP32
Binary release or compiled yourself?
compiled myself

Describe the bug
Proxy linked page not displaying full webpage of ESPPixelStick

Possible Fix will be similar to a bug in Sandevice 4.x code.
It's not returning a proper HTTP 1.x response (no HTTP headers at all) and thus the Apache reverse proxy has no idea what the response is or the size or anything and thus will only return part of the page.

You need to configure FPP as a gateway, (similar to this, I can walk you through the setup)

[MartinMueller2003]

I am seeing lots of headers in the dump. Can you send an example of the header that is missing?

[MartinMueller2003]

I have completely restructured the Web UI to no longer use web sockets. I suspect it will work with an FPP proxy now since all traffic is HTTP.