URLConnection Posting Large DataFiles

Question

I am looking for a way to STREAM large data files, say 100MB+ and the HEAP size is say only 32MB.
I believe I should be able to simply do what the code shows below..but..
The AcmeUtils.copyStream method simply conks out with java.lang.outOfMemoryError.
It appears that server never ever events see the request before the out of memory error occurs....Which indicates to me, that this url OutputStream is infact buffering the ENTIRE stream in memory before even contacting the server. If I use files that smaller then the heap..it works no problem..but thats no good for very large files..
Any suggestions??
thanx
Dan
----- CODE snippit ----------------
URL url = new URL(strURL);
connection = (HttpURLConnection)url.openConnection();
connection.setRequestMethod("POST");
connection.setRequestProperty("ContentLength", ""+m_lCurrentFileLength);
connection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
connection.setUseCaches(false);
connection.setDoOutput(true);
outStream = connection.getOutputStream());
inputStream = new DataInputStream(connection.getInputStream());
// AcmeUtils, simply copies 4k Chunks from the instream to the outstream
AcmeUtils.copyStream(inStream, outStream);

Answer 1

HttpURLConnection and URLConnection are meant more for web browser type interractions where you send a "simple" request to a server and recieve information
it is reasonable that you would complie the whole request before anything is sent to the server
if you need to send "large" file then you will have to write your own communications using java.net.Socket and create an http request
send the following String
POST /nameOfResource HTTP/1.0\r\n"+
Content-length: "+m_ICurrentFileLength+"\r\n"+
Content-type: application/x-www-form-urlencoded\r\n"+
"\r\n"
followed by the contents, using AcmeUtils if you want