Server sent events stopped work after enabling ssl on proxy

Question

I made web project, that based on Tomcat and Nginx in front of him.
Had to work hard to make it work without errors.
However, when I added ssl to nginx. Stopped working

Answer 1

Briefly, nginx detects if connection is alive with backend application and detection may not work correct in case of SSL, as described here

http://mailman.nginx.org/pipermail/nginx/2013-March/038120.html