reverse proxy

nginx.conf

    location / {
        sendfile off;
        proxy_pass         http://127.0.0.1:4000;
        proxy_redirect     default;
        proxy_http_version 1.1;
        proxy_set_header   Host              $host;
        proxy_set_header   X-Real-IP         $remote_addr;
        proxy_set_header   X-Forwarded-For   $proxy_add_x_forwarded_for;
        proxy_set_header   X-Forwarded-Proto $scheme;
        proxy_cache_bypass $http_upgrade;
        proxy_max_temp_file_size 0;
    }