[pox-dev] listen to ECHO_REPLY info,raise events

[Murphy McCauley]

On Feb 14, 2013, at 3:39 PM, Murphy McCauley wrote:

> Given that, it seems like the most reasonable way to implement it is by keeping a timestamp of the most recent read in the Connection object (though I am not entirely certain that I want to do this...).

I'm still not entirely certain I want to do this, but it's currently in there as of 66099cb.  Additionally, the keepalive component now checks to see if it's too old and if so, kills the Connection.

-- Murphy