rb_w32_recvfrom   254 include/ruby/win32.h extern int    WSAAPI rb_w32_recvfrom(int, char *, int, int, struct sockaddr *, int *);
rb_w32_recvfrom   653 include/ruby/win32.h #define recvfrom(s, b, l, f, fr, frl) rb_w32_recvfrom(s, b, l, f, fr, frl)