This method is called only if you
implemented IwodXMPPNotify interface in your application,
and wodXMPP.Notification
property has received reference to
instance of your implementation.
This notification method is called whenever wodXMPP
receives ping back from the remote side. This will usually
be caused because you 'pinged' server in order to
check the connection state, but this can also occur if you
pinged another contact. In that case, The event will also
provide you with Contact parameter, which will
reference to XMPPContact object. This will allow you to
retrieve information about that Contact.
Many servers don't even implement Ping as a service
of theirs. In that case ErrorCode will be set - but
even that is good for you and can be considered as good in
terms of connection being alive - you got *some* response,
right?
Pong Method
