diff -r 9d463b9408ba -r 7c523cf2bc8a jdk/test/java/net/URLConnection/HttpContinueStackOverflow.java
--- a/jdk/test/java/net/URLConnection/HttpContinueStackOverflow.java	Tue Jul 20 10:41:50 2010 -0400
+++ b/jdk/test/java/net/URLConnection/HttpContinueStackOverflow.java	Wed Jul 21 13:29:26 2010 +0100
@@ -30,7 +30,7 @@
  */
 import java.io.BufferedReader;
 import java.io.InputStreamReader;
-import java.io.OutputStreamWriter;
+import java.io.IOException;
 import java.io.PrintStream;
 import java.net.ServerSocket;
 import java.net.Socket;
@@ -41,61 +41,56 @@
 
     static class Server implements Runnable {
         int port;
+        ServerSocket serverSock ;
 
-        Server(int port) {
-            this.port = port;
+        Server() throws IOException {
+            serverSock = new ServerSocket(0);
+        }
+
+        int getLocalPort() {
+            return serverSock.getLocalPort();
         }
 
         public void run() {
+            Socket sock = null;
             try {
-                /* bind to port and wait for connection */
-                ServerSocket serverSock = new ServerSocket(     port );
                 serverSock.setSoTimeout(10000);
-                Socket sock = serverSock.accept();
+                sock = serverSock.accept();
 
                 /* setup streams and read http request */
                 BufferedReader in = new BufferedReader(
                     new InputStreamReader(sock.getInputStream()));
                 PrintStream out = new PrintStream( sock.getOutputStream() );
-                String request = in.readLine();
+                in.readLine();
 
                 /* send continue followed by invalid response */
                 out.println("HTTP/1.1 100 Continue\r");
                 out.println("\r");
                 out.println("junk junk junk");
                 out.flush();
-
-                sock.close();
             } catch (Exception e) {
                 e.printStackTrace();
+            } finally {
+                try { serverSock.close(); } catch (IOException unused) {}
+                try { sock.close(); } catch (IOException unused) {}
             }
         }
     }
 
-    HttpContinueStackOverflow(int port) throws Exception {
+    HttpContinueStackOverflow() throws Exception {
         /* create the server */
-        Server s = new Server(port);
-        Thread thr = new Thread(s);
-        thr.start();
-
-        /* wait for server to bind to port */
-        try {
-            Thread.currentThread().sleep(2000);
-        } catch (Exception e) { }
+        Server s = new Server();
+        (new Thread(s)).start();
 
         /* connect to server, connect to server and get response code */
-        URL url = new URL("http", "localhost", port, "anything.html");
+        URL url = new URL("http", "localhost", s.getLocalPort(), "anything.html");
         HttpURLConnection conn = (HttpURLConnection)url.openConnection();
-        int respCode = conn.getResponseCode();
+        conn.getResponseCode();
         System.out.println("TEST PASSED");
     }
 
     public static void main(String args[]) throws Exception {
-        int port = 4090;
-        if (args.length > 0) {
-            port = Integer.parseInt(args[0]);
-        }
         System.out.println("Testing 100-Continue");
-        new HttpContinueStackOverflow(port);
+        new HttpContinueStackOverflow();
     }
 }