I'm not sure exactly what you're asking here, but it's called by the event system. You can read more about the event system in the section of the POX wiki manual entitled "The Event System".
If you're wondering where that method is set as a listener for an event, check line 42 of of_tutorial. It's set up using one of the methods mentioned in the manual. -- Murphy On Nov 16, 2013, at 6:19 AM, farshad tajedin <farshad.taje...@gmail.com> wrote: > hi > i have a question about of_tutorial.py: how " _handle_PacketIn" > function is called? > > -- > Best Regards > > Farshad Tajedin