Session Timeout

session.cshtml

@* Requires jQuery and jQuery UI *@
    
@if (this.Request.IsAuthenticated) {
        int sessionDialogWait = 2 * 60 * 1000 - 60 * 500; // ms = 1.5 minutes
        int sessionTimeout = 15 * 60 * 1000; // ms = 15 minutes
        if (ViewData["sessionTimeout"] != null) {
          sessionTimeout = ((int)ViewData["sessionTimeout"] * 60 - 120) * 1000;
        }
      
        <script type="text/javascript">
          var logoutTimer = null;
          var sessionTimer = null;
          var sessionTimeout = Number('@sessionTimeout');
          var sessionDialogWait = Number('@sessionDialogWait');

          $(document).ready(function () {
            $('#sessionEndDialog').dialog({
              autoOpen: false,
              bgiframe: true,
              modal: true,
              buttons: {
                OK: function () {
                  $(this).dialog('close');
                  $.get('@Url.Action( "Index", "RentalHeaders" )', scheduleSessionPrompt, 'html');
                },
                Logout: logoutOnSessionExpires
              }
            }).ajaxStart(function () { scheduleSessionPrompt(); });
            scheduleSessionPrompt();
          });

          function scheduleSessionPrompt() {
            if (logoutTimer) clearTimeout(logoutTimer);
            if (sessionTimer) clearTimeout(sessionTimer);

            sessionTimer = setTimeout(sessionExpiring, sessionTimeout);
          }

          function sessionExpiring() {
            logoutTimer = setTimeout(logoutOnSessionExpires, sessionDialogWait);
            $('#sessionEndDialog').dialog('open');
          }

          function logoutOnSessionExpires() {
            window.location.href = '@Url.Action( "Logout", "Authentications" )';
          }       

       </script>
    }

<div id="sessionEndDialog" title="Session Expiring" style="display: none;">
    <p>Your session is about to expire.  Click OK to renew your session or Logout to logout of the application.</p>
</div>