Attempting to get the User-Agent within a try-except block so as to make the...

Attempting to get the User-Agent within a try-except block so as to make the service usable even without the User-Agent header

api.py

@@ -23,10 +23,12 @@ def index():
     if not os.path.isfile('cache/%s' % filename):
         refresh_cache()
 
-    user_agent = request.headers.get('User-Agent')
-
-    if 'windows' in user_agent.lower():
-        filename = 'catalog-windows1252.csv'
+    try:
+        user_agent = request.headers.get('User-Agent')
+        if 'windows' in user_agent.lower():
+            filename = 'catalog-windows1252.csv'
+    except:
+        pass
 
     return send_file('cache/%s' % filename,
                      mimetype='text/csv',