channel.send(new Message(null, null, "payload"));
View view = coordinator.getView();
assert view.size() == 2;
assert view.containsMember(coordinator.getLocalAddress());
assert view.containsMember(channel.getLocalAddress());
view = channel.getView();
assert view.size() == 2;
assert view.containsMember(coordinator.getLocalAddress());
assert view.containsMember(channel.getLocalAddress());