问SignalR: windows身份验证网站出现“用户身份无法在active SignalR连接期间更改”错误

EN

<script type="text/javascript">
        $(document).ready(function() {
            SignalRSetup();
        });

        function SignalRSetup() {
            // Declare a proxy to reference the hub.
            var hub = $.connection.tokenRequestHub;

            // Create a function that the hub can call to broadcast messages.
            hub.client.updateFromService = function(tokenRequestID, message, success) {
                var msg = "Token Request ID {0} => {1}".format(tokenRequestID, message);
                var notyType = (success) ? 'success' : 'error';
                noty({ text: msg, type: notyType, timeout: 2000 });
                if (success) {
                    refreshGrids();
                }
            };

            $.connection.hub.start();//this is where it errors!
        }
</script>