Accessing ebusd-esp32 via reverse-proxy not working

[daxy01]

I'm using a reverse proxy to access all internally hosted things, ebusd being one of them.
The reverse proxy is NGINX and is accessed via https, who then proxies to the internally hosted device.

So: https://hostname.home.domain.com proxies to http://192.168.5.100 (my ebusd device).
This worked fine until I upgraded today: Version 2024-12-15, reported as 1[4c0f]

The following error is thrown by esp-idf:
HTTP version not supported by server

Searching a bit further, esp-idf throws an HTTP ERROR 505.
This issue reported the same and one can fix this via:

For me the solution was to add this line to my location block containing the the proxy_pass directive:
proxy_http_version 1.1;

Reporting it here in case anyone else runs into this and needs a solution.

[worstover]

@daxy01 Thanks for your post. This time I had the solution before knowing about the problem. 😄