nginx proxy for mirrors (rubygems, pypi, github, etc.)

mirrors-proxy.conf

server {
    listen 80;
    server_name rubygems.org production.cf.rubygems.org production.s3.rubygems.org;

    keepalive_timeout  65;

    location / {
        resolver 114.114.114.114;
        proxy_pass http://$host;
        ### force timeouts if one of backend is died ##
        proxy_next_upstream error timeout invalid_header http_500 http_502 http_503;

        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_redirect off;
    }

    access_log /opt/weblogs/proxy-access.log access;
}

server {
    listen 443;
    server_name rubygems.org
                github.com
                pypi.python.org;

    keepalive_timeout  65;

    ssl on;
    ssl_certificate ssl/proxy-mirror.crt;
    ssl_certificate_key ssl/proxy-mirror.key;

    ssl_ciphers "ECDHE-RSA-AES256-GCM-SHA384:ECDHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-SHA384:ECDHE-RSA-AES128-SHA256:ECDHE-RSA-AES256-SHA:ECDHE-RSA-AES128-SHA:DHE-RSA-AES256-SHA256:DHE-RSA-AES128-SHA256:DHE-RSA-AES256-SHA:DHE-RSA-AES128-SHA:ECDHE-RSA-DES-CBC3-SHA:EDH-RSA-DES-CBC3-SHA:AES256-GCM-SHA384:AES128-GCM-SHA256:AES256-SHA256:AES128-SHA256:AES256-SHA:AES128-SHA:DES-CBC3-SHA:HIGH:!aNULL:!eNULL:!EXPORT:!DES:!MD5:!PSK:!RC4";
    ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
    ssl_prefer_server_ciphers on;
    ssl_session_cache shared:SSL:10m;
    ssl_session_timeout 5m;

    location / {
        resolver 114.114.114.114;
        proxy_pass https://$host;
        ### force timeouts if one of backend is died ##
        proxy_next_upstream error timeout invalid_header http_500 http_502 http_503;

        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 https;

        proxy_redirect off;
    }

    access_log /opt/weblogs/proxy-access.log access;
}