func (router *Router) sendPendingGossip() bool {
	sentSomething := false
	for conn := range router.Ourself.getConnections() {
		sentSomething = conn.(gossipConnection).gossipSenders().Flush() || sentSomething
	}
	return sentSomething
}
func (router *Router) sendPendingGossip() bool {
	sentSomething := false
	for conn := range router.Ourself.getConnections() {
		sentSomething = conn.(gossipConnection).gossipSenders().Flush() || sentSomething
	}
	return sentSomething
}
// for testing