When you delete a node all link connected are destroyed

Ref #608

gns3server/controller/link.py

@@ -164,7 +164,7 @@ class Link:
 
     @property
     def nodes(self):
-        return self._nodes
+        return [ node['node'] for node in self._nodes ]
 
     @property
     def capturing(self):
@@ -181,6 +181,11 @@ class Link:
         else:
             return None
 
+    def __eq__(self, other):
+        if not isinstance(other, Link):
+            return False
+        return self.id == other.id
+
     def __json__(self, topology_dump=False):
         """
         :param topology_dump: Filter to keep only properties require for saving on disk

gns3server/controller/node.py

@@ -400,6 +400,11 @@ class Node:
     def __repr__(self):
         return "<gns3server.controller.Node {} {}>".format(self._node_type, self._name)
 
+    def __eq__(self, other):
+        if not isinstance(other, Node):
+            return False
+        return self.id == other.id and other.project.id == self.project.id
+
     def __json__(self, topology_dump=False):
         """
         :param topology_dump: Filter to keep only properties require for saving on disk

gns3server/controller/project.py

@@ -243,6 +243,11 @@ class Project:
     def delete_node(self, node_id):
 
         node = self.get_node(node_id)
+
+        for link in list(self._links.values()):
+            if node in link.nodes:
+                yield from self.delete_link(link.id)
+
         self.remove_allocated_node_name(node.name)
         del self._nodes[node.id]
         yield from node.destroy()