nginx反向代理怎么实现多端口映射

 server {
    listen    80;
    server_name www.百度.test.com;#您要挖写的域名，多个用逗号离隔
    location / {
      proxy_pass http://localhost:8083; 
      proxy_set_header host $host; 
      proxy_set_header x-real-ip $remote_addr; 
      proxy_set_header x-forwarded-for $proxy_add_x_forwarded_for; 
      root  /app/esop_web/esopschool;
      index index.html;
      try_files $uri $uri/ /index.html;
    }
    location /rest{
      proxy_pass http://localhost:9803; 
      proxy_set_header  host  $host; 
      proxy_set_header  x-real-ip  $remote_addr; 
      proxy_set_header  x-forwarded-for $proxy_add_x_forwarded_for; 
    }
  }