Uploading files through HTTP

Question

Hi All.
I am trying to create a moduel for uploading files to a web server using HTTP multipart encripted request.
Well, generally it works, but it is very very slow, and sometimes, with large files (15 MB and above) it gets stuck !
I did not write the multipart parser myself, but downloaded it, and I tried several implementations, and they all have the same problems.
I am using IBM WebSphere (3.5.5) with IBM HTTP Server as app/web server.
My questions are:
1.
===
Is the HTTP protocol should be able to upload file with (theoretically) any size (maybe I am trying to do something that is not possible...) ?
2.
===
Does the servlet engines receive ALL the request object before handling the servlets methods (i.e. wll the file be uploaded to the memory first, and only then can be written to the disk) ?
Thanks a lot, Udi

Answer 1

The code for client is :
     fileinputstream = new FileInputStream(s);
               byte abyte0[] = new byte[fileinputstream.available()];
               fileinputstream.read(abyte0);
               URL url = new URL(s2 + "artius.rgm.rater.RaterServlet");
               URLConnection urlconnection = url.openConnection();
               urlconnection.setDoOutput(true);
               urlconnection.setDoInput(true);
               urlconnection.setUseCaches(false);
               objectoutputstream = new ObjectOutputStream(urlconnection.getOutputStream());
               objectoutputstream.writeObject(abyte0);
               objectoutputstream.close();
               objectinputstream = new ObjectInputStream(urlconnection.getInputStream());
               Hashtable hashtable = (Hashtable)objectinputstream.readObject();
And server is :
          out = new ObjectOutputStream(response.getOutputStream());
          in =new ObjectInputStream(request.getInputStream());
          byte[] b =(byte[])in.readObject(); //hangs here.
Pradeep