From 2c0fb0d01685215dd5b1efca6f8f75b9cf8b304a Mon Sep 17 00:00:00 2001
From: Julien Duponchelle <julien@gns3.net>
Date: Tue, 14 Mar 2017 18:00:16 +0100
Subject: [PATCH] Raise error if image are not avaible on main server during
 export

Fix https://github.com/GNS3/gns3-gui/issues/1928
---
 gns3server/controller/export_project.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/gns3server/controller/export_project.py b/gns3server/controller/export_project.py
index 1cc93a12..6f3f6556 100644
--- a/gns3server/controller/export_project.py
+++ b/gns3server/controller/export_project.py
@@ -191,3 +191,5 @@ def _export_images(project, image, z):
             arcname = os.path.join("images", directory, os.path.basename(image))
             z.write(path, arcname)
             break
+        else:
+            raise aiohttp.web.HTTPConflict(text="Topology could not be exported because the image {} is not available. If you use multiple server, we need a copy of the image on the main server.".format(path))