--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/java/net/ServerSocket/AcceptCauseFileDescriptorLeak.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,90 @@
+/*
+ * Copyright 2006 Sun Microsystems, Inc.  All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+/*
+ * @test
+ * @summary configuring unconnected Socket before passing to implAccept can cause fd leak
+ * @bug 6368984
+ * @author Edward Wang
+ */
+
+import java.io.*;
+import java.net.*;
+
+public class AcceptCauseFileDescriptorLeak {
+    private static final int REPS = 1000;
+
+    public static void main(String[] args) throws Exception {
+        final ServerSocket ss = new ServerSocket(0) {
+            public Socket accept() throws IOException {
+                Socket s = new Socket() { };
+                s.setSoTimeout(10000);
+                implAccept(s);
+                return s;
+            }
+        };
+        Thread t = new Thread(new Runnable() {
+            public void run() {
+                try {
+                    for (int i = 0; i < REPS; i++) {
+                        (new Socket("localhost", ss.getLocalPort())).close();
+                    }
+                } catch (IOException e) {
+                    e.printStackTrace();
+                }
+            }
+        });
+        t.start();
+        for (int i = 0; i < REPS; i++) {
+            ss.accept().close();
+        }
+        ss.close();
+        t.join();
+
+        //
+        // The threshold 20 below is a little arbitrary. The point here is that
+        // the remaining open file descriptors should be constant independent
+        // of REPS.
+        //
+        if (countOpenFD() > 20) {
+            throw new RuntimeException("File descriptor leak detected.");
+        }
+    }
+
+
+    /*
+     * Actually, this approach to count open file descriptors only
+     * works for Solaris/Linux. On Windows platform, this method
+     * will simply return zero. So the test will always be passed
+     * on Windows, too.
+     */
+    private static int countOpenFD() {
+        File dirOfFD = new File("/proc/self/fd");
+        File[] fds = dirOfFD.listFiles();
+
+        if (fds != null)
+            return fds.length;
+        else
+            return 0;
+    }
+}