nginx proxy vs apache proxy

[solitaryr]

I'm sure this is probably just a misconfiguration or a misunderstanding of
nginx proxying.  I'm looking to replace apache as my ssl/proxy server for a
Jboss/tcServer backend.  Unfortunately, I have a java web start app that
builds the jnlp files dynamically based on the scheme, protocol and server
info passed back to it.  I'm not getting the https (port 443) passed back as
expected.  I thought it was the application so I googled and found a some
quick and dirty jsp pages that let me test the responses being passed back. 
For the apache server, I see the following:

Scheme:	 https
Name:	 my.example.com
Port:	 443

Nginx responses show (regardless of how I try to connect):

Scheme:	 http
Name:	 my.example.com
Port:	 80

I'm fairly new to nginx but I've read and googled fairly extensively to no
avail.  

I'm trying to do similar to the following:

    location /myJWSapp/ {
                proxy_pass http://127.0.0.1:8080;
                proxy_redirect off;

                proxy_set_header        Host                         
$http_host;
                proxy_set_header        X-Forwarded-By    
$server_addr:$server_port;
                proxy_set_header        X-Forwarded-For   
$proxy_add_x_forwarded_for;
                proxy_set_header        X-Forwarded-Proto $scheme;
        }

I can see the url in the jnlp file  Also, for some reason the jnlp file is
now being truncated at 10k (I've googled this to no avail as well).  This is
making it even more difficult to debug this issue.

Posted at Nginx Forum: http://forum.nginx.org/read.php?2,239872,239872#msg-239872