Accessing Session variables using $http.get()

Question

I have been trying to consume an Api that I created in .NET MVC from the Web Layer of my app using angularjs's $http.get() method. I am making bunch of $http.get() invocations to call API endpoints. The problem comes when I try to access session data that is being set on the 1st $http.get() call in the App tier of my application. when I try to access the Session data using another $http.get(), the session is not available.

In the Angular Controller I am doing this:

$http.get(http://localhost:50033/api/HomeController/SetSessionData)
  .then($http.get(http://localhost:50033/api/HomeController/GetSessionData)
  .then(//Do Something with sessiondata))

In the Home Controller I am doing:

    [HttpGet]        
    public IHttpActionResult SetSession()
    {
       HttpContext.Current.Session["Data"]=//Some Data being fetched fromDB;
       return //Data from DB as Json
    }

    [HttpGet]      
    public IHttpActionResult GetSession()
    {
      if( HttpContext.Current.Session["Data"]!=null)//I am getting Null here even though I set it in the SetSession call.
      {
         return Json(HttpContext.Current.Session["Data"]);
        }
    }

`