GUI Apache reverse proxy and trailing slash

[kingqueen (Doug)]

I’ve set up Apache as per https://docs.syncthing.net/users/reverseproxy.html with the following directives in the virtual host file:

ProxyPass /syncthing/ hxtp://localhost:8384/ <Location /syncthing/> ProxyPassReverse hxtp://localhost:8384/ Require all granted

The problem is if I go to hxtps://www.example.com/syncthing instead of hxtps://www.example.com/syncthing/ i.e. I omit the trailing slash, I get a 404.

Is there a simple way to correct this please?

I’ve tried redirecting with mod_rewrite and with Redirect etc. Like

RedirectPermanent /syncthing hxtps://example.com/syncthing/ ProxyPass /syncthing/ hxtp://localhost:8384/ <Location /syncthing/> ProxyPassReverse hxtp://localhost:8384/ Require all granted

My various attempts have failed, with hxtps://example.com/syncthing either returning a 404 or unrendered code apparently from the back-end of the GUI; meanwhile hxtps://example.com/syncthing/ still works.

Thank you!

(The “hxtp / hxtps” in the above are due to the forum software objecting to new users posting threads with multiple links in)

[AudriusButkevicius]

Remove the slash from the proxypass directive?

[kingqueen (Doug)]

Thank you for the suggestion,

This results in hxtps://example.com/syncthing returning unrendered code:

And hxtps://example.com/syncthing/ returning the default, non-Syncthing, website for the domain.

Thanks

[AudriusButkevicius]

Perhaps you need to proxy/forward both.

[wweich]

The trailing slash is medatory, as all links (JS, CSS, API, …) are relative. So using a URL like https://example.com/syncthing will result in URLs like https://example.com/assets/css/theme.css while using a URL like https://example.com/syncthing/ will result in URLs like https://example.com/syncthing/assets/css/theme.css

This is my working config:

ProxyPass /syncthing/ http://127.0.0.1:8384/ retry=0
ProxyPassReverse /syncthing/ http://127.0.0.1:8384/
Redirect /syncthing /syncthing/

[kingqueen (Doug)]

Thank you both very much for the thoughts, information and suggestions.

Duplicating the code for both /syncthing and /syncthing/ didn’t work: the /syncthing still returned unrendered code.

For some reason, the redirect directive after the proxypass directives didn’t work either; /syncthing returned a 404.

I’ve settled on the following, which does the trick:

# /syncthing and /syncthing/ - syncthing remote gui
RewriteEngine On
RewriteRule "^/syncthing$" "https://example.com/syncthing/" [R]
ProxyPass /syncthing/ http://127.0.0.1:8384/ retry=0
ProxyPassReverse /syncthing/ http://127.0.0.1:8384/

That has the desired effect of making https://example.com/syncthing redirect to https://example.com/syncthing/, and of the latter rendering and working properly. Doubtless overkill but it works.

Thank you once again