public static extern int manos_socket_sendto_ip(int fd, byte[] buffer, int offset, int length, ref ManosIPEndpoint to, out int err);
public static extern int manos_socket_receivefrom_ip(int fd, byte[] buffer, int length, out ManosIPEndpoint source, out int err);
public static extern int manos_socket_connect_ip(int fd, ref ManosIPEndpoint ep, out int err);
public static extern int manos_socket_peername_ip(int fd, out ManosIPEndpoint ep, out int err);
public static extern int manos_socket_accept(int fd, out ManosIPEndpoint remote, out int err);