Dealing with nginx 400 “The plain HTTP request was sent to HTTPS port” error

Question

I\'m running a Sinatra app behind passenger/nginx. I\'m trying to get it to respond to both http and https calls. The problem is, when both are defined in the server block h

Answer 1

I had the exact same issue, I have kind of the same configuration as your exemple and I got it working by removing the line :

ssl on;

To quote the doc:

If HTTP and HTTPS servers are equal, a single server that handles both HTTP and HTTPS requests may be configured by deleting the directive “ssl on” and adding the ssl parameter for *:443 port