> Hi all:
> 
> I am a newbie here. After reading Ryu wiki (https://github.com/osrg/ryu/wiki)
> I understood that we can add "@set_ev_cls(ofp_event.EventOFPPacketIn,
> MAIN_DISPATCHER)" before the function so that it can handle the Packet-In
> OpenFlow Message and give rules to SWs.
> 
> My Question is: If we have multiple applications need to handle Packet-In
> OF Message, how shoud we decide the priority between them?

if you have multiple applications with event handlers for an event,
all of them will receive the same event.
if you want 'priority' behaviour, you need extra coding in your
applications.

YAMAMOTO Takashi

> 
> Could someone give me a hint for it?
> Thanks!
> 
> Chandler Li

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