New version

src/IPAddress.cpp

@@ -0,0 +1,62 @@
+#include "IPAddress.hpp"
+
+namespace std::net
+{
+	const IPAddress IPAddress::None;
+	const IPAddress IPAddress::Any(0, 0, 0, 0);
+	const IPAddress IPAddress::LocalHost(127, 0, 0, 1);
+	const IPAddress IPAddress::Broadcast(255, 255, 255, 255);
+
+	std::string IPAddress::ToString() const
+	{
+		in_addr address;
+		address.s_addr = m_address;
+
+		return inet_ntoa(address);
+	}
+
+	void IPAddress::Resolve(const std::string& address)
+	{
+		m_address = 0;
+		m_valid = false;
+
+		if (address == "255.255.255.255")
+		{
+			// The broadcast address needs to be handled explicitly,
+			// because it is also the value returned by inet_addr on error
+			m_address = INADDR_BROADCAST;
+			m_valid = true;
+		}
+		else if (address == "0.0.0.0")
+		{
+			m_address = INADDR_ANY;
+			m_valid = true;
+		}
+		else
+		{
+			uint32_t ip = inet_addr(address.c_str());
+			if (ip != INADDR_NONE)
+			{
+				m_address = ip;
+				m_valid = true;
+			}
+			else
+			{
+				addrinfo hints;
+				std::memset(&hints, 0, sizeof(hints));
+				hints.ai_family = AF_INET;
+				addrinfo* result = NULL;
+				if (getaddrinfo(address.c_str(), NULL, &hints, &result) == 0)
+				{
+					if (result)
+					{
+						ip = reinterpret_cast<sockaddr_in*>(result->ai_addr)->sin_addr.s_addr;
+						freeaddrinfo(result);
+						m_address = ip;
+						m_valid = true;
+					}
+				}
+			}
+		}
+	}
+}