title: Get request origin in C# api controller
body: <p>Is there a way how can I can get request origin value in the api controller when I'm calling some api endpoint with ajax call? </p>
  
  <p>For example I'm making this call from www.xyz.com: </p>
  
  <pre><code>$http({
      url: 'http://myazurewebsite.azurewebsites.net/api/ValueCall/CheckForExistingValuers',
      method: "GET",
      params: { loanID: $scope.loanIdPopup }
  }).success(function (data) {
  
  }).error(function (data) {
  
  });
  </code></pre>
  
  <p>Once on the api side, how can I get the www.xyz.com value? </p>
  
  <p>CORS is working properly.</p>