#define clear_socket_error() WSASetLastError(0)
#define readsocket(s,b,n) recv((s),(b),(n),0)
#define writesocket(s,b,n) send((s),(b),(n),0)
#define clear_socket_error() WSASetLastError(0)
#define readsocket(s,b,n) recv((s),(b),(n),0)
#define writesocket(s,b,n) send((s),(b),(n),0)