config.ru

@@ -5,7 +5,7 @@ run Sinatra::Application

                 
              

                 use Rack::Cors do
              

                   allow do
              

                -    origins 'localhost:3000', '127.0.0.1:3000',
              

                +    origins /http:\/\/localhost:\d{1,3}(:\d+)?/, '127.0.0.1:3000',
              

                             /http:\/\/192\.168\.0\.\d{1,3}(:\d+)?/
              

                             # regular expressions can be used here
              

                 
              
@@ -13,7 +13,10 @@ use Rack::Cors do

                     resource '/file/at/*',
              

                         :methods => [:get, :post, :put, :delete, :options],
              

                         :headers => 'x-domain-token',
              

                -        :expose  => ['Some-Custom-Response-Header'],
              

                +        :expose  => [ 'Access-Control-Allow-Origin' => '*',
              

                +                      'Access-Control-Allow-Methods' => 'POST, PUT, PATCH, DELETE, GET, OPTIONS',
              

                +                      'Access-Control-Request-Method' => '*',
              

                +                      'Access-Control-Allow-Headers' => 'Origin, X-Requested-With, Content-Type, Accept, Authorization'],
              

                         :max_age => 600
              

                         # headers to expose
              

                   end