Issue 2249 - Support UDP sockets in multiplexer.fcgi

multiplexer.fcgi

 #!/usr/bin/env python
 # coding: utf-8
 
 # This file is part of the Adblock Plus web scripts,
 # Copyright (C) 2006-2015 Eyeo GmbH
 #
 # Adblock Plus is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 3 as
 # published by the Free Software Foundation.
 #
 # Adblock Plus is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
 # along with Adblock Plus.  If not, see <http://www.gnu.org/licenses/>.
 
 import os, re
 from flup.server.fcgi import WSGIServer
 
 from sitescripts.web import multiplex
 
-bindAddress = None
-if 'FCGI_BIND_ADDRESS' in os.environ:
-  match = re.match(r'^(.*?):(\d+)$', os.environ['FCGI_BIND_ADDRESS'])
-  bindAddress = (match.group(1), int(match.group(2)))
+bindAddress = os.environ.get('FCGI_BIND_ADDRESS')
+if bindAddress:
+  match = re.match(r'^(.*?):(\d+)$', bindAddress)
+  if match:
+    bindAddress = (match.group(1), int(match.group(2)))
+
 srv = WSGIServer(multiplex, debug=False, bindAddress=bindAddress)
 
 if __name__ == '__main__':
   srv.run()