Nginx configuration to redirect HTTP traffic to HTTPS (Puma)

nginx.conf

upstream puma {
  server unix:///var/www/app/shared/tmp/sockets/puma.sock fail_timeout=0;
}

server {
  listen 80 default deferred;
  server_name example.com;
  rewrite ^/(.+) https://example.com/$1 permanent;
}

server {
  listen 443 ssl spdy;
  server_name example.com;

  ssl_certificate /etc/ssl/example.com-unified.crt;
  ssl_certificate_key /etc/ssl/example.com.key;

  root /var/www/example.com/current/public;

  location / {
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header X-Forwarded-Proto https;
    proxy_set_header Host $http_host;
    proxy_redirect off;

    if (-f $request_filename) {
      break;
    }

    proxy_pass http://puma;
  }

  client_max_body_size 4G;
  keepalive_timeout 10;
}