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diff --git a/lib/libUPnP/Neptune/Source/Core/NptDebug.cpp b/lib/libUPnP/Neptune/Source/Core/NptDebug.cpp
new file mode 100644
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+++ b/lib/libUPnP/Neptune/Source/Core/NptDebug.cpp
@@ -0,0 +1,83 @@
+/*****************************************************************
+|
+|   Neptune - Debug Utilities
+|
+| Copyright (c) 2002-2008, Axiomatic Systems, LLC.
+| All rights reserved.
+|
+| Redistribution and use in source and binary forms, with or without
+| modification, are permitted provided that the following conditions are met:
+|     * Redistributions of source code must retain the above copyright
+|       notice, this list of conditions and the following disclaimer.
+|     * 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.
+|     * Neither the name of Axiomatic Systems nor the
+|       names of its contributors may be used to endorse or promote products
+|       derived from this software without specific prior written permission.
+|
+| THIS SOFTWARE IS PROVIDED BY AXIOMATIC SYSTEMS ''AS IS'' AND ANY
+| EXPRESS 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 AXIOMATIC SYSTEMS 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.
+|
+ ****************************************************************/
+
+/*----------------------------------------------------------------------
+|   includes
++---------------------------------------------------------------------*/
+#include <stdarg.h>
+#include "NptUtils.h"
+#include "NptDebug.h"
+
+/*----------------------------------------------------------------------
+|   constants
++---------------------------------------------------------------------*/
+#define NPT_DEBUG_LOCAL_BUFFER_SIZE 1024
+#define NPT_DEBUG_BUFFER_INCREMENT  4096
+#define NPT_DEBUG_BUFFER_MAX_SIZE   65536
+
+/*----------------------------------------------------------------------
+|   NPT_Debug
++---------------------------------------------------------------------*/
+void
+NPT_Debug(const char* format, ...)
+{
+#if defined(NPT_DEBUG)
+    char         local_buffer[NPT_DEBUG_LOCAL_BUFFER_SIZE];
+    unsigned int buffer_size = NPT_DEBUG_LOCAL_BUFFER_SIZE;
+    char*        buffer = local_buffer;
+    va_list      args;
+
+    va_start(args, format);
+
+    for(;;) {
+        int result;
+
+        /* try to format the message (it might not fit) */
+        result = NPT_FormatStringVN(buffer, buffer_size-1, format, args);
+        buffer[buffer_size-1] = 0; /* force a NULL termination */
+        if (result >= 0) break;
+
+        /* the buffer was too small, try something bigger */
+        buffer_size = (buffer_size+NPT_DEBUG_BUFFER_INCREMENT)*2;
+        if (buffer_size > NPT_DEBUG_BUFFER_MAX_SIZE) break;
+        if (buffer != local_buffer) delete[] buffer;
+        buffer = new char[buffer_size];
+        if (buffer == NULL) return;
+    }
+
+    NPT_DebugOutput(buffer);
+    if (buffer != local_buffer) delete[] buffer;
+
+    va_end(args);
+#else
+    NPT_COMPILER_UNUSED(format);
+#endif
+}