--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/com/go/trove/net/FilteredSocket.java	Sat Mar 21 11:00:06 2009 +0000
@@ -0,0 +1,205 @@
+/* ====================================================================
+ * Trove - Copyright (c) 1997-2000 Walt Disney Internet Group
+ * ====================================================================
+ * The Tea Software License, Version 1.1
+ *
+ * Copyright (c) 2000 Walt Disney Internet Group. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. The end-user documentation included with the redistribution,
+ *    if any, must include the following acknowledgment:
+ *       "This product includes software developed by the
+ *        Walt Disney Internet Group (http://opensource.go.com/)."
+ *    Alternately, this acknowledgment may appear in the software itself,
+ *    if and wherever such third-party acknowledgments normally appear.
+ *
+ * 4. The names "Tea", "TeaServlet", "Kettle", "Trove" and "BeanDoc" must
+ *    not be used to endorse or promote products derived from this
+ *    software without prior written permission. For written
+ *    permission, please contact opensource@dig.com.
+ *
+ * 5. Products derived from this software may not be called "Tea",
+ *    "TeaServlet", "Kettle" or "Trove", nor may "Tea", "TeaServlet",
+ *    "Kettle", "Trove" or "BeanDoc" appear in their name, without prior
+ *    written permission of the Walt Disney Internet Group.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED.  IN NO EVENT SHALL THE WALT DISNEY INTERNET GROUP OR ITS
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * For more information about Tea, please see http://opensource.go.com/.
+ */
+
+package com.go.trove.net;
+
+import java.net.*;
+import java.io.*;
+
+/******************************************************************************
+ * A Socket wrapper that passes all calls to an internal Socket. This class is
+ * designed for subclasses to override or hook into the behavior of a Socket
+ * instance.
+ *
+ * @author Brian S O'Neill
+ * @version
+ * <!--$$Revision: 1.1 $-->, <!--$$JustDate:--> 00/12/05 <!-- $-->
+ */
+public class FilteredSocket extends Socket {
+    protected final Socket mSocket;
+
+    public FilteredSocket(Socket socket) throws SocketException {
+        super(new Impl(socket));
+        mSocket = socket;
+    }
+
+    // Implementation note: Java's socket API could use some improvement.
+    // For example, java.net.Socket should be an interface. This would avoid
+    // needing the ugly SocketImpl class provided instead.
+
+    private static class Impl extends SocketImpl {
+        private Socket mSocket;
+
+        public Impl(Socket socket) {
+            if (socket == null) {
+                throw new IllegalArgumentException("Socket is null");
+            }
+            mSocket = socket;
+        }
+
+        public void setOption(int optId, Object value) throws SocketException {
+            switch (optId) {
+            case TCP_NODELAY:
+                mSocket.setTcpNoDelay(((Boolean)value).booleanValue());
+                return;
+            case SO_LINGER:
+                if (value instanceof Boolean) {
+                    mSocket.setSoLinger(((Boolean)value).booleanValue(), 0);
+                }
+                else {
+                    mSocket.setSoLinger(true, ((Integer)value).intValue());
+                }
+                return;
+            case SO_TIMEOUT:
+                mSocket.setSoTimeout(((Integer)value).intValue());
+                return;
+            case SO_SNDBUF:
+                mSocket.setSendBufferSize(((Integer)value).intValue());
+                return;
+            case SO_RCVBUF:
+                mSocket.setReceiveBufferSize(((Integer)value).intValue());
+                return;
+            case SO_BINDADDR:
+            case SO_REUSEADDR:
+            case IP_MULTICAST_IF:
+            default:
+                throw new SocketException("Invalid option: " + optId);
+            }
+        }
+
+        public Object getOption(int optId) throws SocketException {
+            switch (optId) {
+            case TCP_NODELAY:
+                return mSocket.getTcpNoDelay() ? Boolean.TRUE : Boolean.FALSE;
+            case SO_BINDADDR:
+                return mSocket.getLocalAddress();
+            case SO_LINGER:
+                return new Integer(mSocket.getSoLinger());
+            case SO_TIMEOUT:
+                return new Integer(mSocket.getSoTimeout());
+            case SO_SNDBUF:
+                return new Integer(mSocket.getSendBufferSize());
+            case SO_RCVBUF:
+                return new Integer(mSocket.getReceiveBufferSize());
+            case SO_REUSEADDR:
+            case IP_MULTICAST_IF:
+            default:
+                throw new SocketException("Invalid option: " + optId);
+            }
+        }
+
+        protected void create(boolean stream) throws IOException {
+            error();
+        }
+
+        protected void connect(String host, int port) throws IOException {
+            error();
+        }
+
+        protected void connect(InetAddress host, int port) throws IOException {
+            error();
+        }
+
+        protected void connect(SocketAddress host,
+                               int port) throws IOException {
+            error();
+        }
+
+        protected void bind(InetAddress host, int port) throws IOException {
+            error();
+        }
+
+        protected void listen(int backlog) throws IOException {
+            error();
+        }
+
+        protected void accept(SocketImpl s) throws IOException {
+            error();
+        }
+
+        protected InputStream getInputStream() throws IOException {
+            return mSocket.getInputStream();
+        }
+
+        protected OutputStream getOutputStream() throws IOException {
+            return mSocket.getOutputStream();
+        }
+
+        protected int available() throws IOException {
+            return getInputStream().available();
+        }
+
+        protected void close() throws IOException {
+            mSocket.close();
+        }
+
+        protected InetAddress getInetAddress() {
+            return mSocket.getInetAddress();
+        }
+
+        protected int getPort() {
+            return mSocket.getPort();
+        }
+
+        protected int getLocalPort() {
+            return mSocket.getLocalPort();
+        }
+
+        private void error() throws IOException {
+            throw new IOException("Socket already connected");
+        }
+
+        protected void sendUrgentData(int aByte) throws IOException {
+            throw new UnsupportedOperationException();
+        }
+    }
+}