unsafe internal static extern int uv_udp_send( UdpRequest request, Udp udp, Structs.Buffer *buffers, int nbufs, ref NativeSocketAddress address, uv_udp_send_cb callback);
unsafe public static extern int uv_write2(Request req, Stream handle, Structs.Buffer *bufs, int nbufs, Stream sendHandle, uv_write_cb cb);