Hi, I have configured "Http11Nio2Protocol" for tomcat connector. There is a nginx served as reverse proxy before tomcat. I find that sometimes I got "upstream prematurely closed connection while reading response header from upstream" error in nginx error log. This means tomcat server closed the connection with nginx. But when I change to "Http11NioProtocol", there is no such error. What could be the cause for this error? The tomcat version is 8.5.58.
