Packages: gio-2.0
D-Bus

Program: client

[DBus (name = "org.example.Test")]
interface Test : Object {
	public abstract string[] test_property { owned get; set; }

	public abstract int[] test_int (int[] i, out int[] j) throws IOError;
	public abstract string[] test_string (string[] s, out string[] t) throws IOError;
}

void main () {
	// client
	Test test = Bus.get_proxy_sync (BusType.SESSION, "org.example.Test", "/org/example/test", DBusProxyFlags.DO_NOT_LOAD_PROPERTIES);

	int[] j, k;
	k = test.test_int ({ 42 }, out j);
	assert (j.length == 1 && j[0] == 23);
	assert (k.length == 1 && k[0] == 11);

	string[] t, u;
	u = test.test_string ({ "hello" }, out t);
	assert (t.length == 1 && t[0] == "world");
	assert (u.length == 1 && u[0] == "vala");

	test.test_property = { "hello" };
	t = test.test_property;
	assert (t.length == 1 && t[0] == "hello");
}

Program: server

[DBus (name = "org.example.Test")]
class Test : Object {
	public string[] test_property { owned get; set; }

	public int[] test_int (int[] i, out int[] j) {
		assert (i.length == 1 && i[0] == 42);
		j = { 23 };
		return { 11 };
	}

	public string[] test_string (string[] s, out string[] t) {
		assert (s.length == 1 && s[0] == "hello");
		t = { "world" };
		return { "vala" };
	}
}

MainLoop main_loop;

void client_exit (Pid pid, int status) {
	// client finished, terminate server
	assert (status == 0);
	main_loop.quit ();
}

void main () {
	var conn = Bus.get_sync (BusType.SESSION);
	conn.register_object ("/org/example/test", new Test ());

	// try to register service in session bus
	var request_result = conn.call_sync ("org.freedesktop.DBus", "/org/freedesktop/DBus", "org.freedesktop.DBus", "RequestName",
	                                      new Variant ("(su)", "org.example.Test", 0x4), null, 0, -1);
	assert ((uint) request_result.get_child_value (0) == 1);

	// server ready, spawn client
	Pid client_pid;
	Process.spawn_async (null, { "dbus_arrays_client" }, null, SpawnFlags.DO_NOT_REAP_CHILD, null, out client_pid);
	ChildWatch.add (client_pid, client_exit);

	main_loop = new MainLoop ();
	main_loop.run ();
}