Nginx Rails Origin header didn’t match request.base_url

After installing SSL on Nginx server, rails application login page stopped working.

On log file (log/production.log), found following error

HTTP Origin header (https://domain.com) didn't match request.base_url (http://domain.com)

The Nginx config used was

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

server {
   listen 443 ssl;
   root /var/www/public;
   ssl_certificate /etc/ssl/ssl.crt;
   ssl_certificate_key /etc/ssl/ssl.key;
   server_name domain.com;
   try_files $uri/index.html $uri @app;
   location @app {
       proxy_pass http://app;
       proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
       proxy_set_header Host $http_host;
       proxy_redirect off;
   }
   error_page 500 502 503 504 /500.html;
   client_max_body_size 4G;
   keepalive_timeout 10;
}

The problem is solved by adding following to nginx config.

proxy_set_header  X-Forwarded-Proto $scheme;
proxy_set_header  X-Forwarded-Ssl on;
proxy_set_header  X-Forwarded-Port $server_port;
proxy_set_header  X-Forwarded-Host $host;

The new config is

server {
   listen 443 ssl;
   root /var/www/public;
   ssl_certificate /etc/ssl/ssl.crt;
   ssl_certificate_key /etc/ssl/ssl.key;
   server_name domain.com;
   try_files $uri/index.html $uri @app;
   location @app {
       proxy_pass http://app;
       proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
       proxy_set_header Host $http_host;
       proxy_set_header  X-Forwarded-Proto $scheme;
       proxy_set_header  X-Forwarded-Ssl on;
       proxy_set_header  X-Forwarded-Port $server_port;
       proxy_set_header  X-Forwarded-Host $host;
       proxy_redirect off;
   }
   error_page 500 502 503 504 /500.html;
   client_max_body_size 4G;
   keepalive_timeout 10;
}