NServiceBus communication between selfhost and NServiceBus.host

Question

I am new to the NServiceBus world. I have created a new NServiceBus Project with a Send/Receive NServiceBus "client", a command which sends a message to the console app, and a send/receive selfhost (console application).

I run the service bus "client" via NServiceBus.Host.exe. I can submit messages via the following code:

public class OrderMessaging
{
    public IBus Bus { get; set; }

    public void SendRouteMessageReceived(LabRoutingUpdateMessage routingUpdateMessage)
    {
        Bus.Send(new RouteMessageReceived(routingUpdateMessage));
    }
}

I send a test message from another cs file within the client bus:

class OrderManagementTest : IWantToRunAtStartup
{
    public IBus _bus { get; set; }

    public void Run()
    {
        Console.WriteLine("Press 'Enter' to send a message.To exit, Ctrl + C");

        while (Console.ReadLine() != null)
        {
            Int64 _trackNum = 999245;

            Console.WriteLine("Track Number: {0}", _trackNum.ToString());

            _labRouteMessage = new LabRoutingUpdateMessage(_trackNum);

            OrderMessaging Message = new OrderMessaging();
            Message.Bus = _bus;
            Message.SendRouteMessageReceived(_labRouteMessage);
        }
    }
}

My selfhost bus initilization looks like this:

public static class Startup 
{
    static void Main(string[] args)
    {
        // Setup the bus
        BusInitializer.Init();
        Console.Clear();
        Console.ReadLine();  //need to handle messages here from the client 
    }
}

public class BusInitializer 
{
    public static IBus Bus { get; private set; }

    public static void Init()
    {
        Bus = NServiceBus.Configure.With()
            .Log4Net()
            .DefaultBuilder()
            .XmlSerializer()
            .MsmqTransport()
                .IsTransactional(false)
                .PurgeOnStartup(false)
            .UnicastBus()
                .ImpersonateSender(false)
            .CreateBus()
            .Start();
    }
}

I have a message handler in the selfhost console that never receives the message from the client:

public class RouteMessageReceivedHandler : IHandleMessages<RouteMessageReceived>
{
    public void Handle(RouteMessageReceived message)
    {
        Trace.TraceInformation(message.GetType().Name);

        Console.Write("you received a message!!" + message.ToString());
    }
}

Can someone share example code how I might handle the messages from my client to the Startup method in my selfhost console app? Thank you very much in advance!

UPDATE: When I send a message from my send/receive NServiceBus.Host (client) to my selfhost bus (server), I receive the following messages:

Debug NServiceBus.Unicast.UnicastBus [(null)] <> - Calling 'HandleBeginMessage' on NServiceBus.SagaPersisters.NHibernate.NHibernateMessageModule

Debug NServiceBus.Unicast.UnicastBus [(null)] <> - Received message SpecimenTrackBus.TrackRouteManager.InternalMessages.RouteMessageReceived, SpecimenTrackBus.TrackRouteManager.InternalMessages, version=1.0.0.0, Culture=neutral, PublicKeyToken=null with ID .###.. from sender OrderManagement@DavisBLptp

Debug NServiceBus.Unicast.UnicastBus [(null)] <> Finished handling message.

Debug NServiceBus.Unicast.UnicastBus [(null)] <> - Calling 'HandleEndMessage' on NServiceBus.SagaPersisters.NHibernate.NHibernateMessageModule

Looks like a message could actually be handled, however, my RouteMessageReceivedHandler is never called. I start each application via its own exe file. Could it be a threading issue?

Andreas Öhlund Andreas Öhlund · Accepted Answer · 2011-12-11T09:35:14

You're missing a call to .LoadMessageHandlers() in your configuration

NServiceBus communication between selfhost and NServiceBus.host

2 Answers