HTTP access not working from Chrome, only HTTPS

[daniel.leandro]

Hi, people.

I 'm trying to publish IBM Connections by NGINX allowing access using both
HTTP and HTTPS . By HTTPS is working but when I try to access by HTTP I get
this error in Google Chrome only:

This XML file does not appear to have any style information associated with
it. The document tree is shown below.
<error xmlns="http://www.ibm.com/xmlns/prod/sn">
<code>403</code>
<message>
You are not authorized to perform the requested action.
</message>
<trace/>
</error>
   
In Firefox there is no error message , but the page does not load correctly
. In Internet Explorer it opens normally. Internally it works in any
browser. I believe I need some additional configuration in Nginx. My code
is:

upstream connections.domain.com {
    server 172.16.0.83:443  weight=100000;   #LAN/Connections address
    server 172.16.0.83:80;
}
server {
    listen                  172.17.0.14:80;                   #DMZ/NGINX
address 
    listen                  172.17.0.14:443 default ssl;  
    server_name connections.domain.com;
    ssl_session_cache    shared:SSL:1m;
    ssl_session_timeout  10m;
    ssl_certificate /etc/nginx/ssl/connections.cer;
    ssl_certificate_key /etc/nginx/ssl/connections.pem;
    ssl_verify_client off;
    ssl_protocols        SSLv3 TLSv1 TLSv1.1 TLSv1.2;
    ssl_ciphers RC4:HIGH:!aNULL:!MD5;
    ssl_prefer_server_ciphers on;
    location / {
      proxy_pass          https://connections.domain.com;
      proxy_set_header    X-Real-IP $remote_addr;
       proxy_next_upstream timeout;
   }
}

In the Nginx log file, I saw these messages when trying to access from
Google Chrome:

"POST /homepage/j_security_check HTTP/1.1" 403 161
"http://connections.domain.com/homepage/login/" "Mozilla/5.0 (Windows NT
6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/37.0.2062.124
Safari/537.36" "-"

SSL_do_handshake() failed (SSL: error:140770FC:SSL
routines:SSL23_GET_SERVER_HELLO:unknown protocol) while SSL handshaking to
upstream, client: 179.213.15.12, server: connections.domain.com, request:
"GET /homepage HTTP/1.1", upstream: "https://172.16.0.83:80/homepage", host:
"connections.domain.com"

Any help will be appreciated. If you need aditional information, please ask.
Thanks you in advance.

Posted at Nginx Forum: http://forum.nginx.org/read.php?2,253923,253923#msg-253923