From 74b3d60843dba128e545f2f4eb4bfbb0128c22c9 Mon Sep 17 00:00:00 2001
From: Scott Battaglia <scott.battaglia@gmail.com>
Date: Wed, 28 May 2008 20:59:09 +0000
Subject: [PATCH] CASC-51

try/catch around the invalidate call incase its already invalidated.
---
 .../org/jasig/cas/client/session/SingleSignOutFilter.java   | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/cas-client-core/src/main/java/org/jasig/cas/client/session/SingleSignOutFilter.java b/cas-client-core/src/main/java/org/jasig/cas/client/session/SingleSignOutFilter.java
index 684ce5d..267e73d 100644
--- a/cas-client-core/src/main/java/org/jasig/cas/client/session/SingleSignOutFilter.java
+++ b/cas-client-core/src/main/java/org/jasig/cas/client/session/SingleSignOutFilter.java
@@ -75,7 +75,11 @@ public final class SingleSignOutFilter extends AbstractConfigurationFilter {
                             log.trace ("Invalidating session [" + sessionID + "] for ST [" + sessionIdentifier + "]");
                         }
                         
-                        session.invalidate();
+                        try {
+                        	session.invalidate();
+                        } catch (final IllegalStateException e) {
+                        	log.debug(e,e);
+                        }
                 	}
                   return;
                 }