Close a connection to a node notified as DOWN.

This fix an issue where a client was notified down, dropped from node
manager then detected as disconnected: the node was not found.

git-svn-id: https://svn.erp5.org/repos/neo/trunk@2111 71dcc9de-d417-0410-9af5-da40c76e7ee4

neo/node.py

@@ -461,7 +461,11 @@ class NodeManager(object):
                 if state == NodeStates.DOWN:
                     logging.debug('droping node %r, found with %s %s %s %s',
                         node, *log_args)
-                    self.remove(node)
+                    if node.isConnected():
+                        # cut this connection, node removed by handler
+                        node.getConnection().close()
+                    else:
+                        self.remove(node)
                 else:
                     logging.debug('updating node %r to %s %s %s %s',
                         node, *log_args)