Synchronously sets up a D-Bus connection for exchanging D-Bus messages
with the end represented by stream.
If stream is a #GSocketConnection, then the corresponding #GSocket
will be put into non-blocking mode.
The D-Bus connection will interact with stream from a worker thread.
As a result, the caller should not interact with stream after this
method has been called, except by calling gobject.object.ObjectG.unref on it.
If observer is not null it may be used to control the
authentication process.
Synchronously sets up a D-Bus connection for exchanging D-Bus messages with the end represented by stream.
If stream is a #GSocketConnection, then the corresponding #GSocket will be put into non-blocking mode.
The D-Bus connection will interact with stream from a worker thread. As a result, the caller should not interact with stream after this method has been called, except by calling gobject.object.ObjectG.unref on it.
If observer is not null it may be used to control the authentication process.
This is a synchronous failable constructor. See gio.dbus_connection.DBusConnection.new_ for the asynchronous version.