--- a/src/browser/sat_browser/jid.py	Mon Aug 25 17:35:41 2014 +0200
+++ b/src/browser/sat_browser/jid.py	Tue Aug 26 21:25:01 2014 +0200
@@ -17,16 +17,28 @@
 # You should have received a copy of the GNU Affero General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
+# FIXME: Libervia should use sat_frontends.tools.jid but pyjamas doesn't
+# know the unicode type and also experiences issues with __new__.
+
 
 class JID(object):
     """This class help manage JID (Node@Domaine/Resource)"""
 
     def __init__(self, jid):
-        self.__raw = str(jid)
+        self.__raw = str(self.__normalize(jid))
         self.__parse()
 
+    @classmethod
+    def __normalize(cls, jid):
+        """Naive normalization before instantiating and parsing the JID"""
+        if not jid:
+            return jid
+        tokens = jid.split('/')
+        tokens[0] = tokens[0].lower()  # force node and domain to lower-case
+        return '/'.join(tokens)
+
     def __parse(self):
-        """find node domaine and resource"""
+        """Find node domain and resource"""
         node_end = self.__raw.find('@')
         if node_end < 0:
             node_end = 0
@@ -45,9 +57,11 @@
         return self.__raw.__str__()
 
     def is_valid(self):
-        """return True if the jid is xmpp compliant"""
+        """
+        @return: True if the JID is XMPP compliant
+        """
         #FIXME: always return True for the moment
-        return True
+        return self.domain != ''
 
     def __eq__(self, other):
         """Redefine equality operator to implement the naturally expected test"""