[knox] branch master updated: KNOX-2369 - Fix IllegalStateException in case of expired or invalid token (#334)

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The following commit(s) were added to refs/heads/master by this push:
     new a2a4335  KNOX-2369 - Fix IllegalStateException in case of expired or 
invalid token (#334)
a2a4335 is described below

commit a2a4335946b74b27ea23a6cf95c30f69e765517d
Author: Sandeep Moré <moresand...@gmail.com>
AuthorDate: Wed May 6 10:42:24 2020 -0400

    KNOX-2369 - Fix IllegalStateException in case of expired or invalid token 
(#334)
---
 .../provider/federation/jwt/filter/SSOCookieFederationFilter.java     | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git 
a/gateway-provider-security-jwt/src/main/java/org/apache/knox/gateway/provider/federation/jwt/filter/SSOCookieFederationFilter.java
 
b/gateway-provider-security-jwt/src/main/java/org/apache/knox/gateway/provider/federation/jwt/filter/SSOCookieFederationFilter.java
index 6a37c2f..dcecf4d 100644
--- 
a/gateway-provider-security-jwt/src/main/java/org/apache/knox/gateway/provider/federation/jwt/filter/SSOCookieFederationFilter.java
+++ 
b/gateway-provider-security-jwt/src/main/java/org/apache/knox/gateway/provider/federation/jwt/filter/SSOCookieFederationFilter.java
@@ -149,7 +149,9 @@ public class SSOCookieFederationFilter extends 
AbstractJWTFilter {
       }
 
       // There were no valid cookies found so redirect to login url
-      sendRedirectToLoginURL(req, res);
+      if(res != null && !res.isCommitted()) {
+        sendRedirectToLoginURL(req, res);
+      }
     }
   }