tcp/udp 추가, todo:iocp openssl 지원하도록 업데이트하기

include/socket/wsa_manager.h

@@ -0,0 +1,20 @@
+#pragma once
+
+namespace Socket {
+
+struct WSAManager {
+ public:
+  static WSAManager* GetInstance() {
+    static WSAManager instance;
+    return &instance;
+  }
+
+  WSAManager(const WSAManager&) = delete;
+  WSAManager& operator=(const WSAManager&) = delete;
+
+ private:
+	WSAManager();
+	~WSAManager();
+};
+
+}