Re: a new transport for dbus in libgio

[Dan Winship <danw gnome org>]

On 09/24/2013 07:40 AM, Przemyslaw Kedzierski wrote:
> Hello
>
> Currently we work on an experimental feature for libgio,
> we try to adapt it to use kdbus.
> We consider some concepts, one of it is adding a new transport
> for dbus.
> There are three interesting files in glib/gio subdirectory:
> gsocket.c, gsocketclient.c, gsocketconnection.c.
> There is implemented transport over sockets.
> Our idea is to make a separate transport, based on gsocket.c (cloning
> it).

Cloning the source file is a bad idea. If it's not possible to implement
it all inside GSocket (or if it would add a ton of kdbus-specific
stuff), then it should be done as a subclass of GSocket.

> Put there ioctl's to communicate with kdbus, and
> also make out version of objectc from gsocketclient.c and
> gsocketconnection.c, especially of type GIOStream.

You don't want to do anything with GSocketClient; that's just a helper
for creating TCP connections.

Depending on exactly what you need (I'm not really familiar with kdbus),
it might be that GSocketConnection isn't a good match, and so making a
new "GKdbusConnection" or something might make sense. There is also a
bug open about adding control message support to the existing
GSocketConnection (https://bugzilla.gnome.org/show_bug.cgi?id=618556,
although the source code link from there is long-dead).

-- Dan