Bug Description

Hello,
I have Problems reaching my local RustDesk Server through Zoraxy Reverse Proxy (https://github.com/tobychui/zoraxy)
When using Nginx Proxy Manager it works without Problems, so the Problem is Zoraxy.

I captured the Traffic with Wireshark and mailed it to him (see tobychui/zoraxy#659) but he does not see what's exactly the issue and asked me "Since I also have no idea how Rustdesk internal mechanism works, maybe you can forward you capture files to Rustdesk devs to see if they can provide us some hints on what might be the problem?"
so that's what I want to do, I would like to keep the Capture File internal, but the discussion open to everybody to be seen if someone else has the same Problem.

How to Reproduce

Running Rustdesk Server in a Proxmox Container, reachable by Subdomain through Zoraxy Reverse Proxy, Clients cant Reach the Server (everything IPv4 and no Cloudflare in place)

Expected Behavior

Same behavior as with Nginx Proxy Manager

Operating system(s) on local (controlling) side and remote (controlled) side

Windows 11 -> Debian

RustDesk Version(s) on local (controlling) side and remote (controlled) side

1.4.0

Screenshots

Here are some Screenshots: https://imgur.com/a/npm-zoraxy-vQoYtNy

Additional Context

No response