Cannot run SyncTybe behind an Apache reverse proxy

[RolandMarchand]

Users are not able to connect to SyncTube when the service runs behind an Apache reverse proxy.

The application works when entering the raw address and port number (via IP or domain name).

Here is my Apache configuration:

<VirtualHost *:80>
  ServerName sync.lazarusoverlook.com
  Redirect permanent / http://sync.lazarusoverlook.com/
  ProxyPreserveHost On
  ProxyPass / http://40.233.79.250:4200/
  ProxyPassReverse / http://40.233.79.250:4200/
</VirtualHost>

Here is a screenshot of the instant disconnection:

Environment

• OS: Oracle Linux Server 8.10 (ARM64)
• Kernel: 5.15.0-305.176.4.el8uek.aarch64
• Httpd: 2.4.37
• SyncTube: f267adf

[RblSb]

Server tries connection to wss://sync.lazarusoverlook.com/ and fails. Probably you need to also configure wss port (443) on your domain proxy?

Don't have experience with apache, so idk, there is some AI hints about further ws configuration as reference
https://www.perplexity.ai/search/apache-reverse-proxy-cannot-up-vBChY0oeQgypNpawtkspuw

I only know that cloudflare https proxy works, so this is probably about correcting configuration too.

[SimplisticGH]

Here's an example from my previous setup before I switched to nginxproxymanager

<VirtualHost *:443>
        ServerName your.domain.com
        AllowEncodedSlashes On
        ProxyPreserveHost on
        RewriteEngine on
        RewriteCond %{HTTP:Upgrade} websocket [NC]
        RewriteCond %{HTTP:Connection} upgrade [NC]
        RewriteRule .* "ws://localhost:4200%{REQUEST_URI}" [P]
        ProxyRequests Off
        ProxyPass / http://localhost:4200/
        ProxyPassReverse / http://localhost:4200/

        SSLCertificateFile /etc/letsencrypt/live/your.domain.com/fullchain.pem
        SSLCertificateKeyFile /etc/letsencrypt/live/your.domain.com/privkey.pem
</VirtualHost>

You'll have to turn on a few modules, but I never remember which ones. I know for sure you need rewrite and websockets in my example.