Major update:

- Convert PortCore functions into Class
Bug fixes:
  - Correctly handle socket close event (return false on read)
  - Only write to port/socket if valid file handle

PortCore.h

@@ -12,7 +12,7 @@
 /* none */
 
 // Standard C/C++ Libraries
-/* none */
+#include <sys/time.h>
 
 //---------------------------------------------------------------------------
 
@@ -28,13 +28,36 @@
 #define SW_FLOWCTRL     2
 //---------------------------------------------------------------------------
 
-// Port Functions
-int OpenPort( const char * PortName );
-bool ClosePort();
-bool ConfigSerialPort( int Baud, short DataBits, short StopBits, short Parity, short FlowCtrl, int Wait );
+// Port Core Class
+class CPortCore
+{
+private:
+    // Port Def
+    int     Handle;
+    char    * Name;
 
-bool ReadPort();
-bool MaintainPort( int SocketHandle );
+    // PortIn buffer
+    char    * InBuffer;
+    int     InBufLen;
+    int     InLen;
+    int     BytesRead;
+
+    // PortIn Timer
+    timeval     InStart;
+    long        InTimeout; // millisecs
+
+public:
+    CPortCore( const char * PortName, const int PortInBufLen );
+    ~CPortCore();
+
+    bool Open();
+    bool Close();
+    bool Config( int Baud, short DataBits, short StopBits, short Parity, short FlowCtrl, int Wait );
+    int GetHandle() { return Handle; };
+
+    bool Read();
+    bool Maintain( int SocketHandle );
+};
 //---------------------------------------------------------------------------
 
 #endif /* PORTCORE_H_ */