class:: DebugNodeWatcher
summary:: watches a server address for debug-related messages
related:: Reference/Server-Command-Reference, Classes/Node, Classes/NodeWatcher
categories:: Control, Server>Nodes

description::
Posts when these messages are received from the server:
n_go n_end n_off n_on

For debugging, it can be useful to see every node start and end. It doesn't require registration, reacts to each message.

Examples::

code::
s.boot;

d = DebugNodeWatcher(s);
d.start;

y = Group.new;
y.run(false);
y.free;

d.stop;
::