Monitor progress of through WebService DataHandler

Im trying again as my first post in the glassfish forums have not lead to any help/suggestions. I def dont like to repost but I need to expand my audience a bit.
I am building a web service to move files around. I am using a method that returns a @XmlMimeType("application/octet-stream") DataHandler to the client. I do have @MTOM and @StreamingAttachment enabled. S
I dont really know the details, but the call to the WebService that returns the DataHandler seems to actually move the file over? After the method returns, I get the DataHandler and any moving of the data on the client side takes no time at all. So if I call the service to move a 20MB file, the webservice call takes a few minutes, but after the call returns, moving the file through the dataHandler takes not time at all. Any ideas how to monitor this progress on the web service method call? Is there another way to monitor this? TIA.

Well I'm going to chalk my lack of feedback as a question that is hard to understand from my explanation,or I'm asking the wrong question. But I still believe I cannot be the only one hitting this problem. Simply put I cannot find away to view/handle the progress of a file transferred from a web service to the stand alone client, if that web service call returns a DataHandler. Now in this thread ... [http://forums.java.net/jive/thread.jspa?threadID=22481]
others have shown how monitor an upload to the server from the client side. I am after the opposite, ability to monitor the progress of file downloading from the server(GF v2.1) to the client.
Now, is it possible that there isn't a direct way of doing this. Surely Im not the only one to run into this type of situation. Is there a better way of moving a file from glassfish server, with ssl, to a user allowing the client app to monitor the progress?

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