add Ip6toipv4Handler

src/IpAddressTranslator.cpp

@@ -0,0 +1,30 @@
+#include "IpAddressTranslator.h"
+#include <tins/ip_address.h>
+#include <tins/ipv6_address.h>
+
+const size_t IpAddressTranslator::lastAddressByteIndex = Tins::IPv4Address::address_size - 1;
+
+uint32_t IpAddressTranslator::toIpv4AddressBytes(IN const Tins::IPv6Address & ipv6Address)
+{
+	uint32_t ipBytesNetworkOrder = 0;
+	uint8_t * ptrIpByte = reinterpret_cast<uint8_t *>( &ipBytesNetworkOrder );
+	Tins::IPv6Address::const_iterator it = ipv6Address.end();
+	for (int i = lastAddressByteIndex; i > -1; i--)
+	{
+		it--;
+		ptrIpByte[i] = *it;
+	}
+
+	return ipBytesNetworkOrder;
+}
+void IpAddressTranslator::toIpv6Address(IN const Tins::IPv4Address & ipv4Address, INOUT Tins::IPv6Address & resultIpv6Address)
+{
+	Tins::IPv6Address::iterator it = resultIpv6Address.end();
+	uint32_t ipBytesNetworkOrder = ipv4Address;
+	uint8_t * ptrIpByte = reinterpret_cast<uint8_t *>( &ipBytesNetworkOrder );
+	for (int i = lastAddressByteIndex; i > -1; i--)
+	{
+		it--;
+		*it = ptrIpByte[i];
+	}
+}