sample proxy

gistfile1.txt

server {
    listen 5500;
    server_name localhost;

    location / {
      proxy_set_header X-Real-IP  $remote_addr;
      proxy_set_header X-Forwarded-For $remote_addr;
      proxy_set_header Host $host;
      proxy_pass http://localhost:5000;
    }

    location ~/app(.*)$ {
      proxy_set_header X-Real-IP  $remote_addr;
      proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
      proxy_set_header Host $host;
      proxy_pass_request_headers on;
      proxy_pass http://127.0.0.1:3000$1;
    }
}