angularjs - satellizer req.headers.authorization not defined in nodejs demo -

i'am using satellizer authenticate app backend using nodejs, every http request doesn't attact req.headers.authorization, , don't know why, please me fix this, tks in advance

app.js

angular.module('userapp', ['angular-ladda','mgcrea.ngstrap', 'ui.router', 'satellizer', 'angular-loading-bar']) .config(function($httpprovider, $stateprovider, $urlrouterprovider, $authprovider, $locationprovider) {      $stateprovider         .state('/home', {             url: '/',             templateurl: 'app/views/pages/home.html'         })          .state('/login', {             url: '/login',             templateurl: 'app/views/pages/login.html',             controller: 'loginctrl',             controlleras: 'login'         })          .state('/signup', {             url: '/signup',             templateurl: 'app/views/pages/signup.html',             controller: 'signupctrl',             controlleras: 'signup'         })          .state('users', {             url: '/users',             templateurl: 'app/views/pages/user/all.html',             controller: 'userctrl',             controlleras: 'user',             resolve: {                 authenticated: function($q, $location, $auth) {                     var deferred = $q.defer();                      if (!$auth.isauthenticated()) {                         $location.path('/login');                     } else {                         deferred.resolve();                     }                      return deferred.promise;                 }             }         });       $authprovider.facebook({         clientid: 'xxxxxxxxxxx'     });      $urlrouterprovider.otherwise('/');     $locationprovider.html5mode(true);  }); 

usercontroller.js

angular.module('userapp') .controller('userctrl', function(user, $alert) {     vm = this;      vm.getalluser = function() {         vm.processing = true;         user.all()             .success(function(data) {                 vm.processing = true;                 vm.users = data;             })             .error(function(error) {                 $alert({                     content: error.message,                     animation: 'fadezoomfadedown',                     type: 'material',                     duration: 3                 });             });     };      vm.getalluser(); }); 

userservice.js

angular.module('userapp') .factory('user', function($http) {     return{         all: function() {             return $http.get('/api/all');         }     }; }); 

function checking authentication before calling restfull api

function ensureauthenticated(req, res, next) { if (!req.headers.authorization) {     return res.status(401).send({ message: 'please make sure request has authorization header' }); }  var token = req.headers.authorization;  var payload = null; try {     payload = jwt.decode(token, config.token_secret); } catch(err) {     return res.status(401).send({ message: err.message }); } req.user = payload.sub; next(); 

}

api

apirouter.get('/all', ensureauthenticated, function(req, res) {     user.find({}, function(err, users) {         res.send(users);     }); });