Re: notofications between different users

[Rogelio M. Serrano Jr.]

On 2005-10-30 16:02:59 +0800 Richard Frith-Macdonald 
<richard@brainstorm.co.uk> wrote:

> On 30 Oct 2005, at 07:28, Rogelio M. Serrano Jr. wrote:
>
> > On 2005-10-30 12:56:07 +0800 Richard Frith-Macdonald 
> > <richard@brainstorm.co.uk> wrote:
> >
> >
> > > On 30 Oct 2005, at 01:47, Rogelio M. Serrano Jr. wrote:
> > >
> > > > how can notifications between different users propagate? via 
> > > > gdomap?
> > > Via gdnc (GNUstep Distributed Notification Center)
> >
> > I see. Im a little confused though.
> >
> > The manual says that each user should have their own gdnc's  
> > running. Does 
> > the individual gdnc have a way of finding other  gdnc's so they can 
> > all 
> > talk to each other? Or do we actually need  only one gdnc in the 
> > system?
>
> Ah ... gets complicated.
>
> Under MacOS-X you normally can't send notifications between users,  
> and 
> GNUstep now matches that by default, so the standard distributed 
> notifications deliver between processes belonging to the same user,  
> and you 
> need a gdnc instance for each user.
>
> However, you can also use public (ie for all users) and network (for  
> all 
> machines on a lan) distributed notifications in GNUstep.
> For these to work, you must start up one gdnc per host (for the  
> public 
> notifications) and/or one gdnc on some machine on the network  for 
> the 
> network wide notifications.
>
> See the base library NSDistributedNotificationCenter documentation  
> for 
> information on all this.

Thanks.

Slightly off topic question. How does the network interface in Mac OS 
X tell the system programs that the network card is ready? So user 
apps can be notified that the ethernet card is ready and they can now 
use the network?

In linux with hotplug i have a set of scripts that start all the 
network programs after the interface is configured. I was looking for 
a way to tell the user apps that they can now use the network.