--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/solaris/classes/sun/net/NetHooks.java	Mon Apr 06 08:59:33 2009 +0100
@@ -0,0 +1,122 @@
+/*
+ * Copyright 2009 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.  Sun designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Sun in the LICENSE file that accompanied this code.
+ *
+ * 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.
+ */
+
+package sun.net;
+
+import java.net.InetAddress;
+import java.io.FileDescriptor;
+import java.io.IOException;
+import java.security.AccessController;
+import java.security.PrivilegedAction;
+import sun.security.action.GetPropertyAction;
+
+/**
+ * Defines static methods to be invoked prior to binding or connecting TCP sockets.
+ */
+
+public final class NetHooks {
+
+    /**
+     * A provider with hooks to allow sockets be converted prior to binding or
+     * connecting a TCP socket.
+     *
+     * <p> Concrete implementations of this class should define a zero-argument
+     * constructor and implement the abstract methods specified below.
+     */
+    public static abstract class Provider {
+        /**
+         * Initializes a new instance of this class.
+         */
+        protected Provider() {}
+
+        /**
+         * Invoked prior to binding a TCP socket.
+         */
+        public abstract void implBeforeTcpBind(FileDescriptor fdObj,
+                                               InetAddress address,
+                                               int port)
+            throws IOException;
+
+        /**
+         * Invoked prior to connecting an unbound TCP socket.
+         */
+        public abstract void implBeforeTcpConnect(FileDescriptor fdObj,
+                                                 InetAddress address,
+                                                 int port)
+            throws IOException;
+    }
+
+    /**
+     * For now, we load the SDP provider on Solaris. In the future this may
+     * be changed to use the ServiceLoader facility to allow the deployment of
+     * other providers.
+     */
+    private static Provider loadProvider(final String cn) {
+        return AccessController
+            .doPrivileged(new PrivilegedAction<Provider>() {
+                @Override public Provider run() {
+                    Class<Provider> c;
+                    try {
+                        c = (Class<Provider>)Class.forName(cn, true, null);
+                    } catch (ClassNotFoundException x) {
+                        throw new AssertionError(x);
+                    }
+                    try {
+                        return c.newInstance();
+                    } catch (IllegalAccessException x) {
+                        throw new AssertionError(x);
+                    } catch (InstantiationException x) {
+                        throw new AssertionError(x);
+                    }
+            }});
+    }
+    private static final Provider provider = AccessController
+        .doPrivileged(new GetPropertyAction("os.name")).equals("SunOS") ?
+            loadProvider("sun.net.spi.SdpProvider") : null;
+
+    /**
+     * Invoke prior to binding a TCP socket.
+     */
+    public static void beforeTcpBind(FileDescriptor fdObj,
+                                     InetAddress address,
+                                     int port)
+        throws IOException
+    {
+        if (provider != null)
+            provider.implBeforeTcpBind(fdObj, address, port);
+    }
+
+    /**
+     * Invoke prior to connecting an unbound TCP socket.
+     */
+    public static void beforeTcpConnect(FileDescriptor fdObj,
+                                        InetAddress address,
+                                        int port)
+        throws IOException
+    {
+        if (provider != null)
+            provider.implBeforeTcpConnect(fdObj, address, port);
+    }
+}