encode and decode for python3

src/roswww/roswww_server.py

@@ -39,6 +39,7 @@
 import base64
 import functools
 import socket
+import sys
 import tornado.ioloop  # rosbridge installs tornado
 import tornado.web
 import yaml
@@ -59,12 +60,16 @@ def _request_auth(handler):
         def new_f(*args):
             handler = args[0]
             auth_header = handler.request.headers.get('Authorization')
+
             if auth_header is None:
                 return _request_auth(handler)
             if not auth_header.startswith('Basic '):
                 return _request_auth(handler)
 
-            auth_decoded = base64.decodestring(auth_header.split(' ', 1)[1])
+            if sys.version_info.major >= 3:
+                auth_decoded = base64.decodestring(auth_header.split(' ', 1)[1].encode('ascii')).decode('utf-8')
+            else:
+                auth_decoded = base64.decodestring(auth_header.split(' ', 1)[1])
             username, password = auth_decoded.split(':', 1)
 
             if auth(username, password):