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Is your issue described in the documentation?

• I have read the documentation

Is your issue present in the nightly release?

• This issue is present in the nightly release

Describe the Bug

Sunshine does not send any HTTP response headers. When I try to proxy it behind my domain using traefik's TCP routing, the page gets served as raw HTML text, not a rendered page. I think maybe response headers would fix this? Specifically content-type: text/html; charset=utf-8 is what my guess would be for the bare minimum fix, although I don't know what other headers should be returned as a best practice.

Expected Behavior

Proxying behind traefik should result in the normal webui instead of raw text.

Additional Context

tcp:
  routers:
    sunshine-rtr:
      rule: "HostSNI(`sunshine.MYDOMAIN.com`)" 
      entryPoints:
        - websecure
      service: sunshine-svc
      tls:
        passthrough: true
  services:
    sunshine-svc:
      loadBalancer:
        servers:
          - address: "192.168.1.2:47990"

screengrab of Firefox when this happens (Chrome is same)

Host Operating System

Windows

Operating System Version

Windows 11 Pro 21H2 22000.1817

Architecture

64 bit

Sunshine commit or version

Version 0.19.1.010440dbd3e0e89e2dd891f0179d126745fa3460

Package

Windows - installer

GPU Type

Nvidia

GPU Model

GTX 1080

GPU Driver/Mesa Version

528.24

Capture Method (Linux Only)

No response

Config

cert = /Users/NAME/personal/apps/sunshine/cert/cert.crt
pkey = /Users/NAME/personal/apps/sunshine/cert/key.key

Apps

No response

Relevant log output

none