WebSocket connection to 'wss://staging.example.com/websocket' failed: Error during WebSocket handshake: Unexpected response code: 301

[arif-muhammad-wmc-tech]

I using Rails 4.1.5, Ruby 2.2.3 and ngnix on staging environment. Installed and configured websocket on development environment without any issues.Staging environment started getting the following error when I deployed:
WebSocket connection to 'wss://staging.example.com/websocket' failed: Error during WebSocket handshake: Unexpected response code: 301

Here is my ngnix configuration:

  location /websocket {
   proxy_pass http://staging.example.com/websocket;
   proxy_http_version 1.1;
   proxy_set_header Upgrade $http_upgrade;
   proxy_set_header Connection "Upgrade";
   proxy_set_header  X-Real-IP  $remote_addr;
   add_header Access-Control-Allow-Origin *;
   proxy_set_header Upgrade websocket;
   proxy_set_header Connection upgrade;
   proxy_set_header Host $host;
   proxy_set_header X-Real-IP $remote_addr;
   proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
   }

JS:
var dispatcher = new WebSocketRails(window.document.location.host + '/websocket');

config/staging.rb
config.force_ssl = true

Tried different ngnix settings but didn't work. Where I'm doing the mistake ?