ssl redirect proxy server config for nginx

nginx.conf

server {
        #listen   80; ## listen for ipv4; this line is default and implied
        #listen   [::]:80 default_server ipv6only=on; ## listen for ipv6
        resolver 8.8.8.8;

        root /usr/share/nginx/www;
        index index.html index.htm;

        # Make site accessible from http://localhost/
        server_name www.cachefiles.net;
        rewrite ^(.*)$  https://$host$1 permanent;
}

# HTTPS server
#
server {
        listen 443;
        resolver 8.8.8.8;
        set $upstream_endpoint  https://connector.arukascloud.io;
        server_name www.cachefiles.net search.jooyol.com ssl.jooyol.com web.jooyol.com;

        ssl on;
        ssl_certificate /etc/letsencrypt/live/www.cachefiles.net/fullchain.pem;
        ssl_certificate_key /etc/letsencrypt/live/www.cachefiles.net/privkey.pem;

        ssl_session_timeout 5m;

        ssl_protocols SSLv3 TLSv1;
        ssl_ciphers ALL:!ADH:!EXPORT56:RC4+RSA:+HIGH:+MEDIUM:+LOW:+SSLv3:+EXP;
        ssl_prefer_server_ciphers on;

        add_header Strict-Transport-Security max-age=31536000;

        location / {
                proxy_redirect          off;
                proxy_pass $upstream_endpoint;
                proxy_ssl_server_name   on;
                proxy_set_header   Host             $host;
                proxy_set_header   X-Real-IP        $remote_addr;
                proxy_set_header   X-Forwarded-For  $proxy_add_x_forwarded_for;
        }
}