Hi,

Please keep mailing list.
 Ryu-devel <[email protected]>

> Excuse me, would like to know whether there are events in the ryu,
> to track the beginning and end of the connection ?

To know available events, please refer to the Ryu-documentation.
 (http://ryu.readthedocs.org/en/latest/developing.html)

I think you can use ryu.controller.dpset.EventDP to track connect/disconnect of 
a switch.
 
(http://ryu.readthedocs.org/en/latest/ryu_app_api.html#ryu-controller-dpset-eventdp)

> and whether using ryu to access a field in tcp_flags openwswitch?

What do you mean by that?
Do you want to know whether ryu uses a field in tcp_flags to access openwswitch 
or not?

Thanks,
Iwase

On 2015年04月07日 22:31, Николай Жупиков wrote:
> Hello!
> Excuse me, would like to know whether there are events in the ryu,
> to track the beginning and end of the connection ?
> and whether using ryu to access a field in tcp_flags openwswitch?
> Thanks for the help
> 


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