Hi Daniel,

It is two similar machines on the same local network. But i tried to
run the program on completly difrent machine in another network and it
didnt work either. The program didnt work on  Windows 2000
either. But im not sure wheather the copyfromWeb() function was the
only problem that time.

I read one byte at a time because i download a JAR FILE not an image.
No corrupted bytes are allowed here. In fact i tried reading into
byte[1024] and byte[4096] but then downloaded file is 140kB and 160kB
instead of 116kB- which is the size of the file i want to downlaod. To
large file is corrupted and cannot be run.

According to the link:

http://linux.sys-con.com/read/39248.htm

i changed the function like this:

public synchronized boolean copyFileFromWeb2(){
       try{
          URL url  = new URL(newConfigProgURL);
             URLConnection urlC = url.openConnection();
             InputStream is = url.openStream();
             System.out.print("Copying resource (type: " +
urlC.getContentType());
             Date date=new Date(urlC.getLastModified());
             System.out.flush();
             FileOutputStream fos=null;
             fos = new FileOutputStream(tempConfigProgPath);
             DataOutputStream out=new DataOutputStream(fos);
             DataInputStream in=new
DataInputStream(urlC.getInputStream());

             int oneChar, count=0;
             while ((oneChar=in.read()) != -1)
             {
                fos.write(oneChar);
                count++;
             }
             is.close();
             fos.close();
             System.out.println(count + " byte(s) copied");
             return true;
       }catch(Exception e){
           System.err.println(e);
       }
       return false;

   }

Now it works! Still downloading 116 kB jar file in Linux takes about
30 secunds while in Windows Xp it takes maybe 1 secund.

Hi Tom

When i used my first copyFromWeb() function and one byte at a time
reading i got truncated file. It was 73kB instead of 116kB and the
error was Socekt Error: connection reset. So i dont think its DNS's
error.
Each time connection was reset at 73 kB !

But i updated copyFromWeb() and i wonder why now it works. And i still
wonder why it is by far slower on Linux then Windows XP.