diff --git a/common/rfb/VNCSConnectionST.h b/common/rfb/VNCSConnectionST.h
index 662d9f3..a9a8d3a 100644
--- a/common/rfb/VNCSConnectionST.h
+++ b/common/rfb/VNCSConnectionST.h
@@ -109,6 +109,7 @@
     // These methods are invoked as callbacks from processMsg()
 
     virtual void authSuccess();
+    virtual void authFailure(const char* reason);
     virtual void queryConnection(const char* userName);
     virtual void clientInit(bool shared);
     virtual void setPixelFormat(const PixelFormat& pf);
@@ -184,6 +185,9 @@
     Point pointerEventPos;
     bool clientHasCursor;
 
+    Timer authFailureTimer;
+    CharArray authFailureMsg;
+
     CharArray closeReason;
   };
 }