/// <summary>
/// Cancel this observe relation.
/// </summary>
public void Cancel()
{
if (log.IsDebugEnabled)
{
log.Debug("Cancel observe relation from " + _key + " with " + _resource.Path);
}
// stop ongoing retransmissions
if (_exchange.Response != null)
{
_exchange.Response.Cancel();
}
_established = false;
_resource.RemoveObserveRelation(this);
_endpoint.RemoveObserveRelation(this);
_exchange.Complete = true;
}
