FileShare is used to provide directory index service.
It is a debug and unsigned version via ant debug.
Internally, it uses a compiled Nginx to support the functionality.
The internal Nginx is at version 1.9.5 and actually supports http, https, mail, and websocket.
FileShare application creates nginx.conf dynamically and spawn Nginx process to make everything work.
location / {
autoindex on;
alias /path/to/user/specified/;
}