os-ken/doc/source/app/ofctl.rst

ryu.app.ofctl

ryu.app.ofctl provides a convenient way to use OpenFlow messages synchronously.

OfctlService ryu application is automatically loaded if your Ryu application imports ofctl.api module.

Example:

import ryu.app.ofctl.api

OfctlService application internally uses OpenFlow barrier messages to ensure message boundaries. As OpenFlow messages are asynchronous and some of messages does not have any replies on success, barriers are necessary for correct error handling.

api module

ryu.app.ofctl.api

exceptions

ryu.app.ofctl.exception