Saml redirect url issue

src/main/java/net/gepafin/tendermanagement/config/SamlFailureHandler.java

@@ -58,14 +58,16 @@ public class SamlFailureHandler implements AuthenticationFailureHandler {
 					feBaseUrl = hub.getDomainName();
 				}
 			}
-			response.sendRedirect(feBaseUrl + "/login");
+			String redirectUrl = feBaseUrl + "/login";
+			response.sendRedirect(redirectUrl);
+			logger.info("SAML redirect Url: " + redirectUrl);
 		} catch (Exception e) {
 			logger.error("Error processing SAML failure handler", e);
 		}
 	}
 	
 	public static String extractInResponseTo(String message) {
-		String regex = "InResponseTo attribute \\[([a-zA-Z0-9\\-]+)\\]";
+		String regex = "InResponseTo attribute \\[([a-zA-Z0-9\\-_]+)\\]";
 
 		Pattern pattern = Pattern.compile(regex);
 		Matcher matcher = pattern.matcher(message);