DBUS introspection (Was: DCOP interface in kicker broke
bastian at kde.org
Mon Feb 7 02:49:41 PST 2005
On Monday 07 February 2005 06:45, Havoc Pennington wrote:
> On Sun, 2005-02-06 at 23:20 -0500, David A. Wheeler wrote:
> > Oh. When I read that, I didn't interpret that as
> > telling me that callers can TRUST that they'll
> > get a reply, merely that it's "expected".
> Well, they can't *trust* necessarily; we are dealing with network IPC
> here. Nothing is guaranteed. So there are timeouts and so forth.
> I changed some "expected" to "required" in the spec to make it clearer
> that apps must not deliberately muck this up, though.
Wouldn't it be easier to just say "must not reply"? It seems easy enough to me
to check at a relatively low level for this flag so that even when a binding
might be inclined to generate a reply on a higher level, it could simply be
dropped at the low level before such reply actually hits the bus.
E.g. dbus_message_new_method_return() could check for it and either simply
refuse directly or flag the message to be dropped when it gets to
I don't see the point in allowing a reply. (Other than for keeping backwards
compatibility with a previous version of the spec, but for that purpose you
can just say that when you send with NO_REPLY_EXPECTED you must still be
prepared to get, and ignore, a reply if it happens to be send anyway.)
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