Hi all,

I am trying to create a progress bar that is shown when a user uploads a file. This is necesarry because users can upload files to 20 Mb and without any feedback they will tend to think something is wrong.

As you might know there are two sides to uploading files: On the client side the document is parsed to a multipart/form_date structure and on the server side you actually do with it whatever you want.

On the server side I can create messages and status bars because I know how far the script has advanced but the problem I am having is on the client side.

When the client selects a file that is BIG It takes a long time before the server script start running because it waits for the entire multipart/form_data data.

Now the question:

How can I know how far the clients computer has advanced in uploading the file?? This in the way of bytes sent are something like that. If I know this data I can create a progress bar.

Thanks in advance

Tom Briers

May be i'm wrong but check asynchrone task, it's used in web service for wait the response of the service without freeze the client. I think that you can do the samething buit i'm not sure.

Exarkuun

When the client uploads a file, they are creating a regular HTTP request to the server, but it happens to be way more gigantic than usual. Until the whole request has arrived at the server, I don't believe anything will happen with it. I don't even think the request will have started processing. So your server side code will not be able to determine anything about the upload status because by the time it starts running, the request is already at the server. I know of nothing that will allow you to do what you are trying to do. As soon as you hit "Submit", the browser's document is unaccessible so you could not even write something to the current page (i.e. the page where you selected the file and hit "Submit").

I think you might be out of luck. The best you could do is put a message stating that if you choose a really big file, it's going to take a while.

Peter
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Work smarter, not harder.

I am not too much into this, but Imar gives a link to a method of doing progress bars in this thread.

Naturally I has got nothing to do with the status of the upload, however the Response.Buffer = False and writing script to the document during the upload might get you some of the way.

Jacob.

hai dear,
visit there.
http://www.javazoom.net/jzservlets/u...ploadbean.html
-siva