Port already in use

[Zolektric]

🐞 Describe the bug
I can't serve NTFY. Doesn't matter what port I try, I get the same error:

💻 Components impacted
Debian 12 LXC on Proxmox

💡 Screenshots and/or logs

Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name    
tcp        0      0 127.0.0.1:25            0.0.0.0:*               LISTEN      285/master          
tcp6       0      0 ::1:25                  :::*                    LISTEN      285/master          
tcp6       0      0 :::22                   :::*                    LISTEN      1/init              
tcp6       0      0 :::80                   :::*                    LISTEN      126/ntfy

2025/01/17 19:41:33 INFO Listening on :80[http], ntfy 2.11.0, log level is DEBUG (tag=startup)
2025/01/17 19:41:33 DEBUG Waiting until 2025-01-18 00:00:00 +0000 UTC to reset visitor stats (tag=resetter)
2025/01/17 19:41:33 FATAL listen tcp :80: bind: address already in use (exit_code=1)
listen tcp :80: bind: address already in use

ntfy 2.11.0 (d11b100), runtime go1.22.2, built at 2024-05-13T20:16:12Z

🔮 Additional context
I have tried reinstall the LXC and even with a new VM, but to no avail. Same error. I got a notification 24h ago that worked, but it's been a while since I logged in on the server.

[tilpner]

Just ran into this, I think the fallback to :80 happens here:

ntfy/server/config.go

Line 171 in 630f295

ListenHTTP: DefaultListenHTTP,

ntfy/server/config.go

Line 13 in 630f295

DefaultListenHTTP = ":80"

If you want to use listen-unix, also set listen-http = "", so that it stops trying to bind to port 80.
If you just want a different port, try listen-http = "127.0.0.1:1234".