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diff --git a/linden/indra/llmessage/lliobuffer.cpp b/linden/indra/llmessage/lliobuffer.cpp
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+++ b/linden/indra/llmessage/lliobuffer.cpp
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+/** 
+ * @file lliobuffer.cpp
+ * @author Phoenix
+ * @date 2005-05-04
+ * @brief Definition of buffer based implementations of IO Pipes.
+ *
+ * Copyright (c) 2005-2007, Linden Research, Inc.
+ * 
+ * The source code in this file ("Source Code") is provided by Linden Lab
+ * to you under the terms of the GNU General Public License, version 2.0
+ * ("GPL"), unless you have obtained a separate licensing agreement
+ * ("Other License"), formally executed by you and Linden Lab.  Terms of
+ * the GPL can be found in doc/GPL-license.txt in this distribution, or
+ * online at http://secondlife.com/developers/opensource/gplv2
+ * 
+ * There are special exceptions to the terms and conditions of the GPL as
+ * it is applied to this Source Code. View the full text of the exception
+ * in the file doc/FLOSS-exception.txt in this software distribution, or
+ * online at http://secondlife.com/developers/opensource/flossexception
+ * 
+ * By copying, modifying or distributing this software, you acknowledge
+ * that you have read and understood your obligations described above,
+ * and agree to abide by those obligations.
+ * 
+ * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
+ * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
+ * COMPLETENESS OR PERFORMANCE.
+ */
+
+#include "linden_common.h"
+#include "lliobuffer.h"
+
+//
+// LLIOBuffer
+//
+LLIOBuffer::LLIOBuffer() :
+        mBuffer(NULL),
+        mBufferSize(0L),
+        mReadHead(NULL),
+        mWriteHead(NULL)
+{
+}
+
+LLIOBuffer::~LLIOBuffer()
+{
+        if(mBuffer)
+        {
+                delete[] mBuffer;
+        }
+}
+
+U8* LLIOBuffer::data() const
+{
+        return mBuffer;
+}
+
+S64 LLIOBuffer::size() const
+{
+        return mBufferSize;
+}
+
+U8* LLIOBuffer::current() const
+{
+        return mReadHead;
+}
+
+S64 LLIOBuffer::bytesLeft() const
+{
+        return mWriteHead - mReadHead;
+}
+
+void LLIOBuffer::clear()
+{
+        mReadHead = mBuffer;
+        mWriteHead = mBuffer;
+}
+
+LLIOPipe::EStatus LLIOBuffer::seek(LLIOBuffer::EHead head, S64 delta)
+{
+        LLIOPipe::EStatus status = STATUS_ERROR;
+        switch(head)
+        {
+        case READ:
+                if(((delta >= 0) && ((mReadHead + delta) <= mWriteHead))
+                   || (delta < 0) && ((mReadHead + delta) >= mBuffer))
+                {
+                        mReadHead += delta;
+                        status = STATUS_OK;
+                }
+                break;
+        case WRITE:
+                if(((delta >= 0) && ((mWriteHead + delta) < (mBuffer + mBufferSize)))
+                   || (delta < 0) && ((mWriteHead + delta) > mReadHead))
+                {
+                        mWriteHead += delta;
+                        status = STATUS_OK;
+                }
+        default:
+                break;
+        }
+        return status;
+}
+
+// virtual
+LLIOPipe::EStatus LLIOBuffer::process_impl(
+        const LLChannelDescriptors& channels,
+        buffer_ptr_t& buffer,
+        bool& eos,
+        LLSD& context,
+        LLPumpIO* pump)
+{
+        // no-op (I think)
+        llwarns << "You are using an LLIOBuffer which is deprecated." << llendl;
+        return STATUS_OK;
+}