EADDRNOTAVAIL   Errno = 4
	EAFNOSUPPORT    Errno = 5
	EAGAIN          Errno = 6
	EALREADY        Errno = 7
	EBADF           Errno = 8
	EBADMSG         Errno = 9
	EBUSY           Errno = 10
	ECANCELED       Errno = 11
	ECHILD          Errno = 12
	ECONNABORTED    Errno = 13
	ECONNREFUSED    Errno = 14
	ECONNRESET      Errno = 15
	EDEADLK         Errno = 16
	EDESTADDRREQ    Errno = 17
	EDOM            Errno = 18