--- a/lightstring.js
+++ b/lightstring.js
@@ -202,13 +202,15 @@ Lightstring.Connection.prototype = {
         }
       }
       else if (name === 'challenge') {
-
-
+        that.emit('challenge', stanza);
       }
       else if (name === 'response') {
 
 
       }
+      else if (name === 'failure') {
+        that.emit('failure', stanza);
+      }
       else if (name === 'success') {
         that.emit('success', stanza);
       }