I am trying to send data from a Northbound application that I have written, into the Ryu application. The NB app is performing a lot of computation, so I have chosen to run it outside of Ryu. How do I send this information into the Ryu controller so the controller can act on it.
This set up would look like this:
[Northbound packet sender with actionable information (not in the SDN dataplane!!)]
↓
[Ethernet 1 (if on a different machine), or the Linux localhost (if on the same machine)]
↓
[Ryu Machine]
↓
[Ethernet 2 (using OpenFlow)]
↓
[Data plane]
In Pox I have simply set up a thread that can receive packets on a port. When it receives a packet it just creates an event, and my main SDN app can then use this event to perform the network changes needed. When I try this approach in Ryu, it just doesn't work. It seems that when I try to register a socket inside a Ryu app, Ryu will not run until that functionality has been removed.
Any advice?
Thanks in advance,
1 Answer 1
Run the socket in a separate thread. Run socket server on Ryu PC instead of client.