CloseSocketProper instead of closesocket

include/UnixCompat.h

@@ -16,9 +16,14 @@ inline void ZeroMemory(void* dst, size_t len) {
     Assert(std::memset(dst, 0, len) != nullptr);
 }
 // provides unix equivalent of closesocket call in win32
-inline void closesocket(int socket) {
+inline void CloseSocketProper(int socket) {
+#ifndef WIN32
     shutdown(socket, SHUT_RDWR);
     close(socket);
+#else // WIN32
+    shutdown(socket, SD_BOTH);
+    closesocket(socket);
+#endif // WIN32
 }
 
 #ifndef __try