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diff --git a/lib/libUPnP/Neptune/Source/Core/NptSerialPort.h b/lib/libUPnP/Neptune/Source/Core/NptSerialPort.h
new file mode 100644
index 0000000..b543c11
--- /dev/null
+++ b/lib/libUPnP/Neptune/Source/Core/NptSerialPort.h
@@ -0,0 +1,119 @@
+/*****************************************************************
+|
+|   Neptune - Serial Ports
+|
+| 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.
+|
+ ****************************************************************/
+
+#ifndef _NPT_SERIAL_PORT_H_
+#define _NPT_SERIAL_PORT_H_
+
+/*----------------------------------------------------------------------
+|   includes
++---------------------------------------------------------------------*/
+#include "NptTypes.h"
+#include "NptStreams.h"
+
+/*----------------------------------------------------------------------
+|   constants
++---------------------------------------------------------------------*/
+const int NPT_ERROR_NO_SUCH_SERIAL_PORT      = NPT_ERROR_BASE_SERIAL_PORT - 0;
+const int NPT_ERROR_SERIAL_PORT_NOT_OPEN     = NPT_ERROR_BASE_SERIAL_PORT - 1;
+const int NPT_ERROR_SERIAL_PORT_ALREADY_OPEN = NPT_ERROR_BASE_SERIAL_PORT - 2;
+const int NPT_ERROR_SERIAL_PORT_BUSY         = NPT_ERROR_BASE_SERIAL_PORT - 3;
+
+typedef enum {
+    NPT_SERIAL_PORT_PARITY_NONE,
+    NPT_SERIAL_PORT_PARITY_EVEN,
+    NPT_SERIAL_PORT_PARITY_ODD,
+    NPT_SERIAL_PORT_PARITY_MARK
+} NPT_SerialPortParity;
+
+typedef enum {
+    NPT_SERIAL_PORT_STOP_BITS_1,
+    NPT_SERIAL_PORT_STOP_BITS_1_5,
+    NPT_SERIAL_PORT_STOP_BITS_2
+} NPT_SerialPortStopBits;
+
+typedef enum {
+    NPT_SERIAL_PORT_FLOW_CONTROL_NONE,
+    NPT_SERIAL_PORT_FLOW_CONTROL_HARDWARE,
+    NPT_SERIAL_PORT_FLOW_CONTROL_XON_XOFF
+} NPT_SerialPortFlowControl;
+
+/*----------------------------------------------------------------------
+|   NPT_SerialPortInterface
++---------------------------------------------------------------------*/
+class NPT_SerialPortInterface
+{
+public:
+    // constructors and destructor
+    virtual ~NPT_SerialPortInterface() {}
+
+    // methods
+    virtual NPT_Result Open(unsigned int              speed, 
+                            NPT_SerialPortStopBits    stop_bits,
+                            NPT_SerialPortFlowControl flow_control,
+                            NPT_SerialPortParity      parity) = 0;
+    virtual NPT_Result Close() = 0;
+    virtual NPT_Result GetInputStream(NPT_InputStreamReference& stream) = 0;
+    virtual NPT_Result GetOutputStream(NPT_OutputStreamReference& stream) = 0;
+};
+
+/*----------------------------------------------------------------------
+|   NPT_SerialPort
++---------------------------------------------------------------------*/
+class NPT_SerialPort : public NPT_SerialPortInterface
+{
+public:
+    // constructors and destructor
+    NPT_SerialPort(const char* name);
+   ~NPT_SerialPort() override { delete m_Delegate; }
+
+    // NPT_SerialPortInterface methods
+    NPT_Result Open(unsigned int              speed, 
+                    NPT_SerialPortStopBits    stop_bits = NPT_SERIAL_PORT_STOP_BITS_1,
+                    NPT_SerialPortFlowControl flow_control = NPT_SERIAL_PORT_FLOW_CONTROL_NONE,
+                    NPT_SerialPortParity      parity = NPT_SERIAL_PORT_PARITY_NONE) override {
+        return m_Delegate->Open(speed, stop_bits, flow_control, parity);
+    }
+    NPT_Result Close() override {
+        return m_Delegate->Close();
+    }
+    NPT_Result GetInputStream(NPT_InputStreamReference& stream) override {
+        return m_Delegate->GetInputStream(stream);
+    }
+    NPT_Result GetOutputStream(NPT_OutputStreamReference& stream) override {
+        return m_Delegate->GetOutputStream(stream);
+    }
+
+protected:
+    // members
+    NPT_SerialPortInterface* m_Delegate;
+};
+
+#endif // _NPT_SERIAL_PORT_H_