Hi, Carlos
I think you've called api.send_msg() correctly,
however, when you call api.send_msg(), the controller sends an
OFPBarrierRequest in this function:
https://github.com/osrg/ryu/blob/master/ryu/app/ofctl/service.py#L141-L142
After this, the controller will receive an OFPBarrierReply and inspect
it in this function:
https://github.com/osrg/ryu/blob/master/ryu/app/ofctl/service.py#L145
This function will be called when it received OFPBarrierReplies.
So,
api.send_msg(myRyuApp,
ofp_parser.OFPBarrierRequest(datapath),reply_cls=ofp_parser.OFPBarrierReply)
this will sends two OFPBarrierRequests, and the controller will receive
two replies.
Then, the controller will mistake which packet should be inspected, and
error occurs.
In the other words, I think you don't need to make and send an
OFPBarrierRequest by yourself,
because api.send_msg() will take care of the consistency of message
order by using OFPBarrierRequests.
Or, is there a reason why you have to manage it?
Thanks,
Fujimoto
On 2017年10月14日 02:15, Carlos Ferreira wrote:
Update:
I noticed that the call to api.send_msg with a Barrier Message wasn't
blocking at all.
It was blocking in the next call for an OFPFlowMod.
But I still receive the "unknown barrier xid 103043043" at the logs.
What is going on? Is my application really waiting for the Barrier
Message Reply before advancing?
Carlos
On 13 October 2017 at 17:12, Carlos Ferreira <carlosmf...@gmail.com> wrote:
Hello
I'm trying to use the Ryu synchrounous API to send and wait for the
execution of a Barrier message.
I'm using the same implementation presented in:
http://ryu.readthedocs.io/en/latest/app/ofctl.html#ryu.app.ofctl.api.send_msg
For some reason unknown to me, calling
"api.send_msg(myRyuApp, ofp_parser.OFPBarrierRequest(datapath),
reply_cls=ofp_parser.OFPBarrierReply)"
will lock and not return, while at the console, a "unknown barrier xid
103043043" will be printed.
Am I calling api.send_msg correctly?
Thank you for the assistance
Carlos Ferreira
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