nginx如何隐藏端口

[Gaara_Xu]

 server {
                listen       80;   #监听端口
        	server_name  www.gaara-xu.com gaara-xu.com www.yoyonote.com yoyonote.com;   #监听地址      
		
		
			if ( $host = "www.gaara-xu.com"){
		        	rewrite  ^/   http://www.taobao.com break;
	              	}	
			if ( $host = "www.yoyonote.com"){
				rewrite  ^/   http://www.yoyonote.com:9000 break;
			}
			if ( $host = "yoyonote.com"){
                                rewrite  ^/   http://www.yoyonote.com:9000 break;
                        }
       	    proxy_set_header Host $host:$server_port;
            proxy_set_header   X-Real-IP        $remote_addr;
            proxy_set_header   X-Forwarded-For  $proxy_add_x_forwarded_for;

	 }

这是我的配置。我想把这个端口隐藏了。可是不管怎么，都隐藏不了。这是为什么啊

[孟子E章]

rewrite 你这是重定向。你可以使用bypass
server {
listen 80;
server_name ww.gaara-xu.com gaara-xu.com www.yoyonote.com yoyonote.com;
server_name_in_redirect off;
proxy_set_header Host $host:$server_port;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header REMOTE-HOST $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
location / {
proxy_pass http://127.0.0.1:8080/;
}
}