13#include <sys/socket.h>
20 using socket_t = SOCKET;
21 constexpr socket_t invalid_socket = INVALID_SOCKET;
22 inline int closesocket(_In_ socket_t socket) { return ::closesocket(socket); }
25 constexpr socket_t invalid_socket = ((socket_t)-1);
26 inline int closesocket(_In_ socket_t socket) { return ::close(socket); }