Clean exit when you Ctrl+C the server and client are still connected

gns3server/web/route.py

@@ -222,7 +222,6 @@ class Route(object):
                     response.set_status(409)
                     response.json({"message": str(e), "status": 409, "image": e.image, "exception": e.__class__.__name__})
                 except asyncio.futures.CancelledError as e:
-                    log.error("Request canceled")
                     response = Response(request=request, route=route)
                     response.set_status(408)
                     response.json({"message": "Request canceled", "status": 408})

gns3server/web/web_server.py

@@ -112,6 +112,10 @@ class WebServer:
 
         for task in asyncio.Task.all_tasks():
             task.cancel()
+            try:
+                yield from asyncio.wait_for(task, 1)
+            except:
+                pass
 
         self._loop.stop()