Socket reading: hanging when using java, but OK when using javaw

Question

Tested and experienced on:
Windows 2000 Workstation, Windows XP SP1
jdk build 1.4.1_02-b06, build 1.4.2_04-b04
My app is a GUI application. I am creating a socket like this:
Socket socket = new Socket();
socket.connect(new InetSocketAddress(proxy_host, Integer.parseInt(proxy_port)), 8000);
BufferedReader in =
  new BufferedReader(
  new InputStreamReader(socket.getInputStream()));
PrintWriter out =
  new PrintWriter(
   new BufferedWriter(
    new OutputStreamWriter(socket.getOutputStream())),true);
String request = "GET url HTTP/1.1\r\n" +
                 "Accept: *\r\n" +
                 "Host: host\r\n" +
                 "Cookie: " + sessionCookie + "\r\n" +
                 "User-Agent: Mozilla/4.0 (compatible; MSIE 5.01; Windows NT 5.0; YComp 5.0.0.0)" + "\r\n" +
                 "Content-type: application/x-www-form-urlencoded" + "\r\n\r\n";
out.print(request);
out.flush();
String str = "";
while((str = in.readLine()) != null)
socket.close();I am reading a HTML document from server. If I use the call
java -jar MyJar.jar
the reading starts hanging by reading the list line of the document. By call
javaw -jar MyJar.jar
all is fine. What could be the problem. I am really perplexed!

Answer 1

Sounds like perhaps a timing issue. But a bigger issue is why aren't you simply using the higher-level java.net.URL, HttpURLConnection classes? You're reinventing the wheel here by writing low-level socket calls with HTTP protocol strings.