URLConnection con = getServletConnection();
        
            con.setRequestProperty("Content-Type", "application/octet-stream");
            con.setRequestProperty("Transfer-Encoding", "chunked");
            
            OutputStream out = con.getOutputStream();
            BufferedOutputStream bout =  new  BufferedOutputStream(out);
            
             int  buflen =  1024  *  10 ;
             byte [] buf =  new   byte [buflen];

             int  length =  0 ;
             while  ((length = is.read(buf,  0 , buflen)) != - 1 ) {
                bout.write(buf,  0 , length);  
                bout.flush();
            }
            
            bout.close();
            
            is.close();

HttpURLConnection con = (HttpURLConnection)getServletConnection();
        
con.setRequestProperty("Content-Type", "application/octet-stream");
con.setRequestProperty("Connection", "Keep-Alive");
con.setRequestProperty("Keep-Alive", "header");
con.setChunkedStreamingMode( 1024  *  10 );
            
con.connect();
....