NGINX configuration with HTTPS and Gunicorn

server.ini

upstream app_server {
        server 127.0.0.1:8000;
}

server {
        listen 443;

        server_name <ip> <server>;

        location / {
                proxy_pass_header Server;
                proxy_set_header Host $http_host;
                proxy_redirect off;
                proxy_set_header X-Real-IP $remote_addr;
                proxy_set_header X-Scheme $scheme;
                proxy_set_header X-Forwarded-Protocol $scheme
                proxy_pass http://app_server;
        }

        location /static/ {
                root /path/to/site/static-content;
                access_log off;
                expires max;
        }

        ssl on;
        ssl_certificate /etc/nginx/ssl/server.cl.chained.crt;
        ssl_certificate_key /etc/nginx/ssl/server.cl.key;
}

server {
        listen 80;

        server_name 54.204.16.78 server.cl;

        location / {
                include /etc/nginx/proxy_params;
                proxy_pass http://app_server;
        }

        location /static/ {
                root /path/to/site/static-content;
                access_log off;
                expires max;
        }
}