From: Cole Robinson <crobinso@redhat.com>
Date: Tue, 12 Jan 2016 12:45:02 -0500
Subject: [PATCH virt-manager] urlfetcher: Fix URL installs when content-length
 header missing

Suggested-by: bduff@sjm.com
(cherry picked from commit eae7dc061968a83fef8ebb632c8f939621ff22b1)
---
 virtinst/urlfetcher.py | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/virtinst/urlfetcher.py b/virtinst/urlfetcher.py
index 6181a5a..3266186 100644
--- a/virtinst/urlfetcher.py
+++ b/virtinst/urlfetcher.py
@@ -186,8 +186,11 @@ class _HTTPURLFetcher(_URLFetcher):
         """
         response = requests.get(url, stream=True)
         response.raise_for_status()
-        size = response.headers.get('content-length')
-        return response, size.isdigit() and int(size) or None
+        try:
+            size = int(response.headers.get('content-length'))
+        except:
+            size = None
+        return response, size
 
     def _write(self, urlobj, fileobj):
         """