I am facing a wired issue:
My setup is the following: Openhab 3.1 running on a Raspi internally. A NGINX Reverse proxy does forward request from the outside to my OH Server.
The access is protected by mutual SSL. The whole setup runs like this for about 8 or 9 years.
Today all of a sudden the app shows an http 400 error when I try to access from the outside (internal works fine) - the same happens on a different device.
The Nginx error log shows no error, the access log show the 400 error when accessing: “GET /rest/ HTTP/1.1” 400 617 “-” “Mozilla/5.0 (Linux; Android 4.0.4; Galaxy Nexus Build/IMM76B) AppleWebKit/535.19 (KHTML, like Gecko) Chrome/xx.0.1025.xxx Mobile Safari/535.19”
I am a bit lost… of course I have not changed anything* i.e. yesterday I rebooted the raspi running OH but there were no updates for the last week. Neither the app nor sth. on the linux system.
It looks like the error 400 comes from the OH Server, but I found no logs to support this assumption.
EDIT: embarrassing… the user certificates were expired… I guess I was too tired to notice…