type sdflags = uint32

//go:wasmimport wasi_snapshot_preview1 sock_accept
//go:noescape
func sock_accept(fd int32, flags fdflags, newfd unsafe.Pointer) Errno

//go:wasmimport wasi_snapshot_preview1 sock_shutdown
//go:noescape
func sock_shutdown(fd int32, flags sdflags) Errno

func Socket(proto, sotype, unused int) (fd int, err error) {
	return 0, ENOSYS
}

func Bind(fd int, sa Sockaddr) error {
	return ENOSYS
}

	net         string
	laddr       Addr
	raddr       Addr

	// The only networking available in WASI preview 1 is the ability to
	// sock_accept on a pre-opened socket, and then fd_read, fd_write,
	// fd_close, and sock_shutdown on the resulting connection. We
	// intercept applicable netFD calls on this instance, and then pass
	// the remainder of the netFD calls to fakeNetFD.
	*fakeNetFD
}

func newFD(net string, sysfd int) *netFD {