// affichage a la reception
private void receive(Message msg) {
this.log("Received " + msg.getContent());
}
// envoi d'un message (l'envoi se fait via la couche transport)
public void send(Message msg, Node dest) {
this.log("Send " + msg.getContent() + " to " + dest.getID());
this.transport.send(getMyNode(), dest, msg, this.mypid);
}