proxy_pass & getServerPort problems

[Jiang Web]

When I use the nginx upstream and proxy_pass to Reverse Proxy the
request. the configuration is:

upstream w3new_cls {
server szxap205-in.huawei.com:9090;
server szxap206-in.huawei.com:9090;
}


server {
listen 80;
server_name w3.huawei.com;

location /NetWeb/ {
proxy_pass http://w3new_cls/NetWeb/;
proxy_redirect off;
proxy_set_header Host $host:80;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
}
}

when I access the URL: http://w3.huawei.com/NetWeb and the application
use the <%request.getServerPort%> to get the server port is 9090, Not
the port 80.
But I want to get the port is w3.huawei.com:80, How can I to resovle the
problems.
Thanks for Help.

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