Interceptor for all http requests in angularJS 1.0.x

Question

I am currently working in a angular app in whcih I wanted to write an interceptor for all http request from my app which in turns calls a service to know whether the single

Answer 1

There is a good example in the official documentation working for the current stable 1.2.0.

[http://docs.angularjs.org/api/ng.$http][1] (top quarter of the page, search for Interceptors)

angular.module('RequestInterceptor', [])
  .config(function ($httpProvider) {
    $httpProvider.interceptors.push('requestInterceptor');
  })
  .factory('requestInterceptor', function ($q, $rootScope) {
    $rootScope.pendingRequests = 0;
    return {
           'request': function (config) {
                $rootScope.pendingRequests++;
                return config || $q.when(config);
            },

            'requestError': function(rejection) {
                $rootScope.pendingRequests--;
                return $q.reject(rejection);
            },

            'response': function(response) {
                $rootScope.pendingRequests--;
                return response || $q.when(response);
            },

            'responseError': function(rejection) {
                $rootScope.pendingRequests--;
                return $q.reject(rejection);
            }
        }
    });

Instead of counting the pendingRequests, you can store the current time, lets say as lastRequestTimestamp. If you combine this with a globally running timer, you can detect how long ago the last request was.