Weird httpurlconnection timed out

Question

Hi
I have a small http client program that connections to any website to test whether the site is up or not.
I have two clients: a jsp client and a dos command client. The dos command client works well with any web sites from both my development computer and the production computer. The jsp client works well with any websites from my development computer; however, the same jsp works well with all the websites except one. The exact message is "java.net.ConnectException: Connection timed out". I found that open connection is successful and the exception happens when retrieve the response code. I guess this happens because of network related settings. Is there anyway to discover the probelm is on the client side(my jsp client) or on the server side(the website that the client wants to test whether the site is up or not)?
the jsp client code is as follows:
try
URL u = new URL("http://www.banksnb.com/");
out.println("attemp to connect!"+ "<br>");
HttpURLConnection httpConn = (HttpURLConnection)u.openConnection();
out.println("connected!" +"<br>");
if(httpConn != null)
     out.println("attempt to retrieve response code!" +"<br>");
int responseCode =httpConn.getResponseCode();
               out.println("response code = " + responseCode);
}catch(Exception ex)
out.println("error = " + ex+"<br>");
Thanks

Answer 1

isb = new BufferedInputStream(socket.getInputStream());
osb = new BufferedOutputStream(socket.getOutputStream());
isc = new BufferedReader(new
InputStreamReader(socket.getInputStream()));
osc = new BufferedWriter(new
OutputStreamWriter(socket.getOutputStream()));Stop right there, this will never work. You are using two kinds of buffers on the same stream and they will steal data from each other so you will get apparent data loss.