From 8a459a48213073776e98ccdb6e4330f1d1979c10 Mon Sep 17 00:00:00 2001
From: John Fleming <31658656+spikefishjohn@users.noreply.github.com>
Date: Tue, 20 Feb 2024 00:46:00 -0500
Subject: [PATCH] Update notification_handler.py

Force close websocket tcp socket.
---
 gns3server/handlers/api/controller/notification_handler.py | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/gns3server/handlers/api/controller/notification_handler.py b/gns3server/handlers/api/controller/notification_handler.py
index bf41ad20..9c532e44 100644
--- a/gns3server/handlers/api/controller/notification_handler.py
+++ b/gns3server/handlers/api/controller/notification_handler.py
@@ -82,6 +82,11 @@ class NotificationHandler:
             log.info("Client has disconnected from controller WebSocket")
             if not ws.closed:
                 await ws.close()
+            try:
+                # call close to force close ws transport. Unknown root cause as of yet.
+                ws._req.transport.close()
+            except:
+                pass
             request.app['websockets'].discard(ws)
 
         return ws