Hi Guys,

for the context setting, I am exchanging messages between my nServiceBus client and nSerivceBus server. its is the namespace xyz.Messages and and a class, Message : IMessage

I have more messages that are in the other dlls, like xyz.Messages.Domain1, xyz.Messages.Domain2, xyz.Messages.Domain3. and messages that derive form that base message, Message.

I have the endpoints defined as like :

 at client
<UnicastBusConfig>
 <MessageEndpointMappings>
    <add Messages="xyz.Messages" Endpoint="xyzServerQueue" />
    <add Messages="xyz.Messages.Domain1" Endpoint="xyzServerQueue" />
    <add Messages="xyz.Messages.Domain2" Endpoint="xyzServerQueue" />
  </MessageEndpointMappings>
</UnicastBusConfig>

at Server

<UnicastBusConfig>
 <MessageEndpointMappings>
   <add Messages="xyz.Messages" Endpoint="xyzClientQueue" />
   <add Messages="xyz.Messages.Domain1" Endpoint="xyzClientQueue" />
   <add Messages="xyz.Messages.Domain2" Endpoint="xyzClientQueue" />
 </MessageEndpointMappings>
</UnicastBusConfig>

and the bus initialized as

        IBus serviceBus = Configure.With()
            .SpringBuilder()
            .XmlSerializer()
            .MsmqTransport()
            .UnicastBus()
            .LoadMessageHandlers()
            .CreateBus()
            .Start();

now when i try sending instance of Message type or any type derived types of Message, it successfully sends the message over and at the server, i get the proper type.

eg.

Message message= new Message();
Bus.Send(message); // works fine, transfers Message type
message = new MessageDerived1();
Bus.Send(message); // works fine, transfers MessageDerived1 type
message = new MessageDerived2();
Bus.Send(message); // works fine, transfers MessageDerived2 type

My problem arises when any type, say MessageDerived1, contains a member variable of type Message, and when i assign it to a derived type, the type is not properly transferred over the wire. It transfers only as Message type, not the derived type.

public class MessageDerived2 : Message
{
  public Message message;
}

MessageDerived2 messageDerived2= new MessageDerived2();
messageDerived2.message = new MessageDerived1();
message = messageDerived2;
Bus.Send(message); // incorrect behaviour, transfers MessageDerived2 correctly, but looses type of  MessageDerived2.Message (it deserializes as Message type, instead of MessageDerived1)

any help is strongly appreciated.

Thanks TJ