- add Pcap++ Windows build

pcappp/include/pcapplusplus/IPLayer.h

@@ -0,0 +1,46 @@
+#ifndef PACKETPP_IP_LAYER
+#define PACKETPP_IP_LAYER
+
+#include "IpAddress.h"
+#include "Layer.h"
+
+/// @file
+
+/**
+ * \namespace pcpp
+ * \brief The main namespace for the PcapPlusPlus lib
+ */
+namespace pcpp
+{
+	/**
+	 * @class IPLayer
+	 * This is an interface (abstract class) implemented in the IP layers (IPv4Layer and IPv6Layer).
+	 * It provides methods to fetch the source and destination IP addresses in an abdtract way
+	 * that hides the IP type (IPv4 or IPv6). This is useful for use-cases in which the IP type doesn't matter.
+	 * For example: if you're only interested in printing the IP address the IP type shouldn't matter.
+	 */
+	class IPLayer
+	{
+	protected:
+		IPLayer() {}
+	public:
+		/**
+		 * An abstract method to get the source IP address
+		 * @return An IPAddress object containing the source address
+		 */
+		virtual IPAddress getSrcIPAddress() const = 0;
+
+		/**
+		 * An abstract method to get the destination IP address
+		 * @return An IPAddress object containing the destination address
+		 */
+		virtual IPAddress getDstIPAddress() const = 0;
+
+		/**
+		 * An empty destructor
+		 */
+		virtual ~IPLayer() {}
+	};
+}
+
+#endif // PACKETPP_IP_LAYER