Setting application wide HTTP headers in AngularJS

Solution 1:

You can use default headers for angular 1.0.x:

$http.defaults.headers.common['Authentication'] = 'authentication';

or request interceptor for angular 1.1.x+:

myapp.factory('httpRequestInterceptor', function () {
  return {
    request: function (config) {

      // use this to destroying other existing headers
      config.headers = {'Authentication':'authentication'}

      // use this to prevent destroying other existing headers
      // config.headers['Authorization'] = 'authentication';

      return config;
    }
  };
});

myapp.config(function ($httpProvider) {
  $httpProvider.interceptors.push('httpRequestInterceptor');
});

Since factories/services are singletons, this works as long as you do not need to dynamically change your 'authentication' value after the service has been instantiated.

Solution 2:

$http.defaults.headers.common['Auth-Token'] = 'token';

It seems headers() normalizes the key names.

Solution 3:

Adding to above responses of @Guria and @Panga

config.headers['X-Access-Token'] = $window.sessionStorage.token;

One can use x-access-token in header as JWT(jsonwebtoken). I store JWT in the session storage when a user authenticate first time.