feat($http): Allow setting withCredentials on defaults

Closes #1095.

Author: thughes

src/ng/http.js

@@ -88,7 +88,7 @@ function $HttpProvider() {
       JSON_END = /[\}\]]\s*$/,
       PROTECTION_PREFIX = /^\)\]\}',?\n/;
 
-  var $config = this.defaults = {
+  var defaults = this.defaults = {
     // transform incoming response data
     transformResponse: [function(data) {
       if (isString(data)) {
@@ -475,9 +475,9 @@ function $HttpProvider() {
     function $http(config) {
       config.method = uppercase(config.method);
 
-      var reqTransformFn = config.transformRequest || $config.transformRequest,
-          respTransformFn = config.transformResponse || $config.transformResponse,
-          defHeaders = $config.headers,
+      var reqTransformFn = config.transformRequest || defaults.transformRequest,
+          respTransformFn = config.transformResponse || defaults.transformResponse,
+          defHeaders = defaults.headers,
           reqHeaders = extend({'X-XSRF-TOKEN': $browser.cookies()['XSRF-TOKEN']},
               defHeaders.common, defHeaders[lowercase(config.method)], config.headers),
           reqData = transformData(config.data, headersGetter(reqHeaders), reqTransformFn),
@@ -488,6 +488,10 @@ function $HttpProvider() {
         delete reqHeaders['Content-Type'];
       }
 
+      if (isUndefined(config.withCredentials) && !isUndefined(defaults.withCredentials)) {
+        config.withCredentials = defaults.withCredentials;
+      }
+
       // send request
       promise = sendReq(config, reqData, reqHeaders);
 
@@ -619,11 +623,11 @@ function $HttpProvider() {
          *
          * @description
          * Runtime equivalent of the `$httpProvider.defaults` property. Allows configuration of
-         * default headers as well as request and response transformations.
+         * default headers, withCredentials as well as request and response transformations.
          *
          * See "Setting HTTP Headers" and "Transforming Requests and Responses" sections above.
          */
-    $http.defaults = $config;
+    $http.defaults = defaults;
 
 
     return $http;
@@ -658,7 +662,7 @@ function $HttpProvider() {
      * Makes the request
      *
      * !!! ACCESSES CLOSURE VARS:
-     * $httpBackend, $config, $log, $rootScope, defaultCache, $http.pendingRequests
+     * $httpBackend, defaults, $log, $rootScope, defaultCache, $http.pendingRequests
      */
     function sendReq(config, reqData, reqHeaders) {
       var deferred = $q.defer(),

test/ng/httpSpec.js

@@ -981,4 +981,27 @@ describe('$http', function() {
 
     $httpBackend.verifyNoOutstandingExpectation = noop;
   });
+
+
+  it('should use withCredentials from default', function() {
+    var $httpBackend = jasmine.createSpy('$httpBackend');
+
+    $httpBackend.andCallFake(function(m, u, d, c, h, timeout, withCredentials, responseType) {
+      expect(withCredentials).toBe(true);
+    });
+
+    module(function($provide) {
+      $provide.value('$httpBackend', $httpBackend);
+    });
+
+    inject(function($http) {
+      $http.defaults.withCredentials = true;
+      $http({
+        method: 'GET', url: 'some.html', timeout: 12345, responseType: 'json'
+      });
+      expect($httpBackend).toHaveBeenCalledOnce();
+    });
+
+    $httpBackend.verifyNoOutstandingExpectation = noop;
+  });
 });