Tutorial: Caddy (Reverse Proxy) + Let's Encrypt Certificates + Dynamic DNS

[OPNenthu]

Thanks- I deleted the file and don't see the error now after bouncing the service.

Here's the 'before' and 'after' state:

Code Select Expand

root@firewall:~ # cd /var/run/caddy/
root@firewall:/var/run/caddy # ls -l
total 2
-rw-rw----  1 root www 6 Mar 14 23:00 caddy.pid
s-w--w----  1 root www 0 Mar 14 23:00 caddy.sock
srw-rw-rw-  1 root www 0 Mar 14 22:57 log.sock
root@firewall:/var/run/caddy #
root@firewall:/var/run/caddy # rm caddy.sock

(bounced the service here)

Code Select Expand

root@firewall:/var/run/caddy # ls -l
total 2
-rw-------  1 www  www 6 Mar 15 07:32 caddy.pid
s-w--w----  1 www  www 0 Mar 15 07:32 caddy.sock
srw-rw-rw-  1 root www 0 Mar 14 22:57 log.sock


[awshirley]

I'm getting an error in the Caddy log when trying to use the reverse proxy on a Plex instance.  The log shows:

"error","ts":"2025-03-19T23:36:47Z","logger":"http.log.error","msg":"EOF","request":{"remote_ip":"192.168.x.xxx","remote_port":"50589","client_ip":"192.168.x.xxx","proto":"HTTP/2.0","method":"GET","host":"plexsub.mydomain.com","uri":"/media/providers?X-Plex-Product=Plex%20Web&X-Plex-Version=4.145.1&X-Plex-Client-Identifier=y1574g5pgysu0b7435g9qsqd&X-Plex-Platform=Firefox&X-Plex-Platform-Version=136.0&X-Plex-Features=external-media%2Cindirect-media%2Chub-style-list&X-Plex-Model=bundled&X-Plex-Device=Windows&X-Plex-Device-Name=Firefox&X-Plex-Device-Screen-Resolution=1536x731%2C1536x864&X-Plex-Token=TWeNgtGispep-E4RBR1m&X-Plex-Language=en&X-Plex-Session-Id=72ff17fc-21db-4b3b-8437-9194ca66bd7d","headers":{"Referer":["http://192.168.x.xxx:32400/"],"Accept-Encoding":["gzip, deflate, br, zstd"],"User-Agent":["Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:136.0) Gecko/20100101 Firefox/136.0"],"Accept-Language":["en"],"Dnt":["1"],"Sec-Fetch-Site":["cross-site"],"Accept":["application/json"],"Sec-Fetch-Dest":["empty"],"Sec-Fetch-Mode":["cors"],"Sec-Gpc":["1"],"Te":["trailers"],"Origin":["http://192.168.x.xxx:32400"]},"tls":{"resumed":false,"version":772,"cipher_suite":4865,"proto":"h2","server_name":"plexsub.mydomain.com"}},"duration":0.000950754,"status":502,"err_id":"kr1iycyqd","err_trace":"reverseproxy.statusError (reverseproxy.go:1373)"}

Plex is stating that remote access through the reverse proxy doesn't work.  Is this something easily fixed?

[Monviech (Cedrik)]

TWIMC Just warning here that DNS Providers might get a bit more inconvenient soon.

https://github.com/opnsense/plugins/issues/4643

Only cloudflare will remain default compiled in as it is maintained directly by the caddy organization. All other providers will be optionally installable via CLI with e.g.

Code Select Expand

caddy add-package github.com/caddy-dns/duckdns

https://caddyserver.com/docs/command-line#caddy-add-package

If they won't compile after the caddy binary is updated to caddy-v2.10.0 please reach out to their maintainers via https://github.com/caddy-dns

This had happened once already and I don't want to run after 40 repos with for something I don't even use personally (I dont use dns-challenge or dynamic-dns, I maintain this in my free time)