Hi Tom, Yeah, sorry for the confusion. I can't reconstruct what I was thinking, but I probably forgot about the fact, even though you mentioned it, that CoyoteInvoker is wrapping the result in an InvocationResponse. I think 1. the content-type returned by the ServerInvoctionHandler should be preserved and sent back to the client, but 2. HTTPUnMarshaller shouldn't be using the value of content-type. Maybe Remoting should send a new metadata value, say 'remoting-type', to be used by HTTPUnmarshaller, which would then remove it from the metadata map before it gets back to the client. I've created JBREM-1145 "HTTPUnMarshaller shouldn't use the value of content-type to determine the type of an object". Now it makes sense? -Ron View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4247653#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...