Re: notofications between different users

[Richard Frith-Macdonald]

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.