On Tue, 02 Oct 2007 at 17:43:41 -0400, Benjamin M. Schwartz wrote:
>  I used these to send arbitrary bytes over the Tube, which only supports utf8.

This isn't actually true. If a D-Bus method is declared with signature 's'
(string) it only supports unicode or UTF-8 str objects. If no signature is
declared but you use a str argument, dbus-python will guess that you
wanted signature 's' and the string has to be UTF-8.

However, if your method is declared with signature 'ay' (byte array) you
can pass arbitrary binary data. You probably want to put
byte_arrays=True in the <at> method decorator, so the method will get its
input as a dbus.ByteArray (a subclass of str) rather than as a
dbus.Array of dbus.Bytes (subclasses of: a list of ints).