restructure project

include/td/network/Network.h

@@ -0,0 +1,31 @@
+#ifndef NETWORK_NETWORK_H_
+#define NETWORK_NETWORK_H_
+
+#ifdef _WIN32
+#include <ws2tcpip.h>
+#else
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include <fcntl.h>
+#endif
+
+#include "td/network/Socket.h"
+#include "td/network/IPAddress.h"
+#include "td/network/UDPSocket.h"
+#include "td/network/TCPSocket.h"
+
+namespace td {
+namespace network {
+
+class Dns {
+public:
+	static IPAddresses Resolve(const std::string& host);
+};
+
+} // ns network
+} // ns td
+
+#endif