Hi,

On Mon, 4 Feb 2013 17:04:52 +0100
Jeremias Blendin <[email protected]> wrote:

> I am interested how different apps in ryu can (an should) work
> together.

This is the area that we are still working actively. So it's changing
though.

> How can an app discover which other apps are running?

We don't provide a mechnism that enables an application to find
others. Instead, you need to specify applications to be activated at
startup. We also provide a mechnism that enables an application to
activate others.

> I guess the apps could communicate using the event system.

Yeah.

> Are there facilities for inter-app communications in place or
> should this be implemented for each app separately?

An application need to define its messages, that is, python
classes. For example, controller/dpset.py defines EventDP,
EventPortAdd, and EventPortDelete classes for messaging.

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