SignalR OnConnected and OnDisconnected not firing

Question

I'm having trouble with OnConnected and OnDisconnected overrides in my Hub not firing.

For replication purposes, I've got a very simple Hub:

public class OnlineHub : Hub
{
    public void TestMethod()
    {
        var a = 1;
    }

    public override System.Threading.Tasks.Task OnConnected()
    {
        return Clients.All.connected(Context.ConnectionId, DateTime.Now.ToString());
    }

    public override System.Threading.Tasks.Task OnDisconnected()
    {
        return Clients.All.disconnected(Context.ConnectionId, DateTime.Now.ToString());
    }
}

And an aspx page:

<script type="text/javascript">
    $(function () {
        $("#btn").click(function () {
            $.connection.onlineHub.server.testMethod();
        });

        $.connection.onlineHub.server.connected = function (id, date) {
            $("#results").append("connected: " + id + " : " + date + "</br>");
        };

        $.connection.onlineHub.server.disconnected = function (id, date) {
            $("#results").append(("connected: " + id + " : " + date + "</br>");
        };

        $.connection.onlineHub.connection.start();
    });

</script>

I'm using jQuery 1.6.4 and signalR 1.0.0-alpha2. The client side connected and disconnected methods are not being executed. And if I put a breakpoint in OnConnected or OnDisconnected, the breakpoints don't hit.

The connection is being made as my TestMethod calls ok and I'm getting a connectionId back from signalR's negotiate call.

I'm sure I'm missing something simple.

Thanks in advance.

Answer 1

It also turns out that on a script you need to define at least one client callback for events to be raised on the hub. Be careful with this when expected OnConnected and OnDisconnected to be called.

Answer 2

Your client handlers should probably look like this:

$.connection.onlineHub.client.connected = function(){...}